Loadable folding rudder unfolding dynamic testing device and method

Abstract

The invention discloses a loadable folding rudder unfolding dynamic testing device and method.The device comprises a workbench, data sampling and analyzing equipment, a control surface limiting assembly, a loading assembly, a base assembly and a transmission assembly, and the control surface limiting assembly and the base assembly are arranged on the workbench; the loading assembly, the transmission assembly and the folding rudder are arranged on the base assembly, and the folding rudder is connected with the control surface limiting assembly and the transmission assembly. The device provided by the invention can continuously monitor the motion characteristics, the unfolding time and the vibration characteristics of the folding rudder in the unfolding process. In order to restore the real working condition of the folding rudder more truly, a loading assembly used for simulating pneumatic torque is additionally arranged, and loads can be increased when the folding rudder is unfolded and tested according to needs. In addition, through simple adjustment, the device and the method can be used for testing folding rudders with different interfaces, boundary dimensions, folding directions and angles.

Description

Technical Field

[0001] The invention belongs to the technical field of folding rudder testing, and particularly relates to a loadable folding rudder deployment dynamic testing device and method. Background Art

[0002] The folding rudder consists of a fixed rudder and a movable rudder. The fixed rudder is fixed on the aircraft, and the movable rudder automatically and quickly unfolds after the aircraft is launched and is reliably locked with the fixed rudder to form an integral body to control the stable flight of the aircraft. Using a folding rudder on an aircraft can reduce the space required for storage and transportation before launch. The unfolding of the folding rudder is a dynamic process, and the unfolding time is an important performance parameter of the folding rudder. Each folding rudder needs to be tested for its unfolding time after being manufactured. Using efficient and fast testing devices and methods can effectively reduce the time consumed by testing and improve production efficiency.

[0003] Traditional folding rudder unfolding time testing devices have problems such as low sampling frequency, difficulty in restoring the real working conditions, and cumbersome operation. Some testing devices only perform data sampling at the start and end of the folding rudder unfolding movement, and calculate the unfolding time of the folding rudder through the time difference between the two samplings, but the movement law during the unfolding movement and the vibration characteristics after unfolding in place cannot be observed through the data obtained by this testing method. In addition, some testing devices do not consider the aerodynamic torque received by the folding rudder during unfolding under real working conditions and lack corresponding loading devices.

[0004] The patent document with the publication number CN104443430A discloses a folding rudder surface unfolding testing device, which includes a support mechanism, a photoelectric sensor measurement mechanism, a force application mechanism, and a control system. The support mechanism includes a support frame and a folding rudder surface support, and the folding rudder surface support is fixed on the support frame for installing the folding rudder surface. The force application mechanism is connected to the folding rudder surface through a swivel joint and a connecting rod. The photoelectric sensor measurement mechanism is installed on the support frame for testing the unfolding and folding time of the folding rudder surface, and the control system is installed on the support frame for automatically controlling the entire test measurement process. This invention can test the unfolding time of the folding rudder surface and the mechanism resistance value during the unfolding process, but lacks the microsecond-level dynamic monitoring function during the non-loaded and loaded unfolding processes of the folding rudder. Summary of the Invention

[0005] To solve the above technical problems, the invention provides a loadable folding rudder deployment dynamic testing device and method.

[0006] The invention is achieved through the following technical solutions.

[0007] A loadable folding rudder deployment dynamic test device provided by the present invention includes a workbench, a data sampling and analysis device, a rudder surface limiting component, a loading component, a base component, and a transmission component. The rudder surface limiting component and the base component are arranged on the workbench. The loading component, the transmission component, and the folding rudder are arranged on the base component. The folding rudder is connected to the transmission component and contacts the rudder surface limiting component.

[0008] Preferably, the workbench includes a panel, a support column, and a bottom plate. The panel is connected to the bottom plate through the support column. Threaded holes are provided on the panel. The panel is respectively connected to the rudder surface limiting component and the base component.

[0009] Preferably, the data sampling and analysis device includes a computer, a data acquisition card, a cable, a sensor power supply, an angular displacement sensor, an angular displacement sensor bracket, and a tension sensor. The angular displacement sensor bracket is installed on the base component. The angular displacement sensor is installed on the angular displacement sensor bracket. The data acquisition card is respectively connected to the angular displacement sensor, the tension sensor, and the computer through the cable. The sensor power supply is respectively connected to the angular displacement sensor and the tension sensor through the cable.

[0010] Preferably, the rudder surface limiting component includes a limit pin, a limiter mounting base, a limiter snap ring, and a rope. The limiter mounting base is installed on the workbench. The limiter snap ring is installed on the limiter mounting base. The locking screw is arranged on the limiter snap ring. The limit pin is installed on the limiter snap ring in a sliding connection manner. One end of the rope is connected to the limit pin.

[0011] Preferably, the loading component includes a tension adjusting nut, a screw rod, a connecting bolt, a first spring mounting block, a tension spring, a second spring mounting block, a first wire rope fixing bolt, a first wire rope pressing plate, a wire rope, a spring group limiting rod, a limiting rod base, and a screw rod fixing base. The screw rod fixing base is installed on the base component. The tension adjusting nut is installed on one side of the screw rod. One end of the connecting bolt is connected to the first spring mounting block. The other end of the connecting bolt is connected to the tension sensor of the data sampling and analysis device. One end of the tension spring is connected to the first spring mounting block. The other end of the tension spring is connected to the second spring mounting block. One end of the wire rope is fixed to the second spring mounting block through the first wire rope fixing bolt and the first wire rope pressing plate. The other end of the wire rope is fixed to the transmission component. The limiting rod base is installed on the main mounting base. The spring group limiting rod is installed on the limiting rod base.

[0012] Preferably, the base assembly consists of a main mounting base, a folding rudder base, folding rudder fixing bolts, folding rudder mounting gaskets, a rotating shaft base and rotating shaft base bolts. The main mounting base is fixed on the workbench. A first waist-shaped hole and a second waist-shaped hole are provided above the main mounting base. A first waist-shaped groove is provided below the main mounting base corresponding to the position of the first waist-shaped hole, and a second waist-shaped groove is provided below the main mounting base corresponding to the position of the second waist-shaped hole. The folding rudder base is mounted on the main mounting base. Folding rudder fixing bolts and folding rudder mounting gaskets are provided on the folding rudder base. The rotating shaft base is mounted on the main mounting base.

[0013] Preferably, the transmission assembly includes a tail vertebra set screw, a tail vertebra adapter, a first connecting shaft, a sleeve, a universal joint coupling and a second connecting shaft. The tail vertebra set screw is connected to the tail vertebra adapter. One side of the first connecting shaft is connected to the tail vertebra adapter through the sleeve. The other side of the first connecting shaft is connected to the universal joint coupling. The other side of the universal joint coupling is connected to the second connecting shaft. One side of the second connecting shaft is connected to the rotating shaft and fixed by a locking nut.

[0014] Preferably, a conical surface matching the outer side of the rotating shaft is provided inside the locking nut. The rotating shaft is mounted on the base assembly through a bearing. A second wire rope pressing plate, a second wire rope fixing bolt and a sensor set screw are provided at one end of the rotating shaft.

[0015] The method for dynamically testing the unfolding of the folding rudder using the above device includes the following steps:

[0016] Step 1, assemble the device;

[0017] Step 2, replace the tail vertebra of the folding rudder with a tail vertebra adapter and mount the folding rudder on the folding rudder base;

[0018] Step 3, move the folding rudder base to the test position and fix it;

[0019] Step 4, use the sleeve to connect the tail vertebra adapter and the first connecting shaft, and use the sleeve set screw to fix the sleeve;

[0020] Step 5, set the load of the loading assembly as required through the computer and the tension adjusting nut;

[0021] Step 6, adjust the installation position of the limiter mounting base, and fold the folding rudder to the specified angle and fix it with a limit pin;

[0022] Step 7, sample through the computer, then release the fixation of the moving rudder surface, and end the acquisition when the folding rudder is fully unfolded;

[0023] Step 8, repeat steps 6 - 7 for multiple repeated tests to ensure the sampling accuracy.

[0024] A method for calculating the deployment time of a folding rudder using the above device, comprising the following steps:

[0025] Step 1, read the motion angle data sequence A[1, 2, 3,..., n] and the corresponding time data sequence T[1, 2, 3,..., n] collected during the deployment process of the folding rudder,

[0026] [1, 2, 3,..., n] is the index value of the data sequence;

[0027] Step 2, search in the motion angle data sequence A[1, 2, 3,..., n] for the index value i corresponding to the motion angle of (A[n] - A[1]) / 2,

[0028] A[1] is the angle value collected when the folding rudder is in the folded state, A[n] is the angle value collected when the folding rudder is in the deployed state, and (A[n] - A[1]) / 2 is the angle value collected when the folding rudder is deployed to half;

[0029] Step 3, search in the motion angle data sequence A[1, 2, 3,..., n], starting from A[i], with the index i decreasing, and stop searching and record the index value as i when A[i] equals A[1] for the first time s , then T[i s is the starting time of the folding rudder's movement;

[0030] Step 4, search in the motion angle data sequence A[1, 2, 3,..., n], starting from A[i], with the index i increasing, and stop searching and record the index value as i when A[i] equals A[n] for the first time e , then T[i e is the stopping time of the folding rudder's movement;

[0031] Step 5, calculate the deployment time T of the folding rudder u =T[i e -T[i s .

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The present invention can perform non-loaded and loaded deployment tests on folding rudders with different interfaces, external dimensions, folding directions, and angles;

[0034] 2. The present invention can automatically save test data after a single test and draw test data curves, including three types: time-motion angle, time-spring tension, and time-load torque. The drawn charts can be scaled arbitrarily to observe the test results;

[0035] 3. The present invention can apply positive or negative loads as needed during the deployment test of the folding rudder;

[0036] 4. The present invention can automatically calculate the deployment time of the folding rudder based on the time and motion angle data collected during the test;

[0037] 5. The present invention can set the data sampling frequency as needed to achieve microsecond-level dynamic monitoring during the non-loaded and loaded deployment processes of the folding rudder, so as to analyze the deployment performance of the folding rudder. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of the present invention;

[0039] Figure 2 is a schematic diagram of the transmission component of the present invention;

[0040] Figure 3 is a schematic diagram of the connection between the rotating shaft and the second connecting shaft of the present invention;

[0041] Figure 4 is a front view schematic diagram of the main mounting base of the present invention;

[0042] Figure 5 is a rear view schematic diagram of the main mounting base of the present invention.

[0043] In the figure: workbench 10, panel 101, support column 102, bottom plate 103, threaded hole 1011, data sampling and analysis device 20, computer 201, acquisition card 202, cable 203, sensor power supply 204, angular displacement sensor 205, bracket fixing bolt 206, angular displacement sensor bracket 207, angular displacement sensor fixing bolt 208, tension sensor 209, rudder surface limiting component 30, limiting pin shaft 301, limiter mounting base 302, locking screw 303, limiter snap ring 304, fixing screw 305, rope 306, loading component 40, tension adjusting nut 401, screw rod 402, connecting bolt 403, first spring mounting block 404, tension spring 405, second spring mounting block 406, first wire rope fixing bolt 407, first wire rope pressing plate 408, wire rope 409, spring group limiting rod 410, limiting rod base 411, limiting rod fixing bolt 412, screw rod fixing base 413, base fixing bolt 414, base component 50, main mounting base 501, folding rudder base bolt 502, main base bolt 503, folding rudder base 504, folding rudder fixing bolt 505, folding rudder mounting gasket 506, rotating shaft base 507, rotating shaft base bolt 508, first kidney-shaped hole 5011, second kidney-shaped hole 5012, first kidney-shaped groove 5013, second kidney-shaped groove 5014, transmission component 60, tail vertebra set screw 601, tail vertebra adapter 602, first connecting shaft 603, sleeve 604, sleeve set screw 605, universal joint coupling 606, coupling set screw 607, second connecting shaft 608, locking nut 609, bearing 610, rotating shaft 611, second wire rope pressing plate 612, second wire rope fixing bolt 613, sensor set screw 614, groove 6101, folding rudder 70, fixed rudder 701, movable rudder 702. Detailed implementation manners

[0044] The technical solution of the present invention will be further described below, but the scope of protection claimed is not limited thereto.

[0045] The technical solution of the present invention will be introduced in detail below with reference to the accompanying drawings. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0046] In addition, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0047] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through an excessive structure between the two connected main bodies, and they are only connected through a transmission structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Embodiment:

[0049] As Figures 1 to 5 shown, a loadable folding rudder deployment dynamic test device includes a workbench 10, a data sampling and analysis device 20, a rudder surface limiting component 30, a loading component 40, a base component 50, and a transmission component 60. The rudder surface limiting component 30 and the base component 50 are arranged on the workbench 10, the loading component 40, the transmission component 60, and the folding rudder 70 are arranged on the base component 50, and the folding rudder 70 is connected to the transmission component 60 and contacts the rudder surface limiting component 30.

[0050] The workbench 10 provides a basic support platform for the test device and is used to install the remaining components;

[0051] The rudder surface limiting component 30 is provided with a mechanism that can be arbitrarily adjusted in height and locked, which can limit the movement of the rudder surface in the folded state and release the restriction on the rudder surface at the start of the test to enable the folding rudder to deploy;

[0052] The loading component 40 is provided with a plurality of pull rope springs, and the elastic force generated when the springs are stretched is applied to the rotating shaft to simulate the aerodynamic torque received when the folding rudder deploys;

[0053] The transmission component 60 is used to transmit the movement generated by the folding rudder and also to transmit the torque generated by the loading component to the folding rudder;

[0054] Base assembly 50, which provides mounting interfaces for the folding rudder, loading assembly, and transmission assembly, facilitating the correct installation of these components and realizing their corresponding functions;

[0055] Data sampling and analysis device 20, which is used to dynamically monitor the movement angle, torque, and deployment time during the deployment test of the folding rudder surface;

[0056] The test device also includes data analysis software, which is used in conjunction with the data sampling and analysis device to set data acquisition parameters, view the current data of the test device, and save and analyze test data.

[0057] Single sampling function, which can sample the signals of the angular displacement sensor 205 and the tension sensor 209 once, so as to obtain the movement angle, tension of the tension spring 405, and loading torque data at the current position;

[0058] Continuous sampling function, which can continuously sample the signals of the angular displacement sensor 205 and the tension sensor 209 according to the set sampling parameters, so as to obtain the movement angle, spring tension, and loading torque data during the entire test process;

[0059] Sampling data storage function, which can automatically store all the data collected during the start to end of continuous sampling into the computer 201 after stopping continuous sampling. The path and file name of the stored file are set by the software operator before starting continuous collection;

[0060] Graph plotting function, which can automatically draw graphs using the data collected during the start to end of continuous sampling after stopping continuous sampling. The drawn graphs include three types: time - movement angle, time - spring tension, and time - load torque. The drawn graphs can be scaled arbitrarily to observe the test results;

[0061] Local file reading function: The local file reading function can read the historical test data stored in the hard disk and draw graphs to observe the test results.

[0062] The folding rudder 70 includes a fixed rudder 701 and a movable rudder 702.

[0063] The workbench 10 includes a panel 101, struts 102, and a bottom plate 103. The panel 101 is connected by the struts 102 and the bottom plate 103. Threaded holes 1011 are provided on the panel 101, and the panel 101 is respectively connected to the rudder surface limit assembly 30 and the base assembly 50. Multiple groups of threaded holes 1011 are provided, and the multiple groups of threaded holes 1011 are used to install the rudder surface limit assembly 30. When testing folding rudders 70 with different external dimensions and folding directions, the installation position of the rudder surface limit assembly can be adjusted to fix the rudder surface in the folded state.

[0064] The data sampling and analysis device 20 includes a computer 201, a data acquisition card 202, a cable 203, a sensor power supply 204, an angular displacement sensor 205, a bracket fixing bolt 206, an angular displacement sensor bracket 207, an angular displacement sensor fixing bolt 208, and a tension sensor 209. The angular displacement sensor bracket 207 is installed on the rotating shaft base 507 of the base assembly 50 through the bracket fixing bolt 206. The angular displacement sensor bracket 207 provides an installation interface for the angular displacement sensor 205. The angular displacement sensor 205 is installed on the angular displacement sensor bracket 207 through the angular displacement sensor fixing bolt 208. The angular displacement sensor 205 is used to measure the movement angle of the moving rudder 702, and the tension sensor 209 is used to measure the tension of the tension spring 405. The tension of the tension spring 405 and the torque on the rotating shaft 611 can be viewed and recorded in real time in the data analysis software. The data acquisition card 202 is used to acquire the signals of the angular displacement sensor 205 and the tension sensor 209. The sampling frequency of the data acquisition card 202 is 400 KHz, and the sampling interval is 2.5 microseconds, realizing microsecond-level dynamic monitoring during the unfolding process of the folding rudder. The data acquisition card 202 is respectively connected to the angular displacement sensor 205, the tension sensor 209, and the computer 201 through the cable 203. The sensor power supply 204 is respectively connected to the angular displacement sensor 205 and the tension sensor 209 through the cable 203. The sensor power supply 204 is used to supply power to the angular displacement sensor 205 and the tension sensor 209. The cable 203 is used to respectively connect the angular displacement sensor 205 and the tension sensor 209 to the data acquisition card 202 and the sensor power supply 204, and connect the data acquisition card 202 to the computer 201. The computer 201 is used to control the data acquisition card 202 to acquire the signals of the angular displacement sensor 205 and the tension sensor 209.

[0065] The angular displacement sensor bracket 207 is located on the rotating shaft base 507, and the angular displacement sensor bracket 207 provides an installation interface for the angular displacement sensor 205;

[0066] The angular displacement sensor 205 is located on the angular displacement sensor bracket 207, and the angular displacement sensor 205 is used to measure the movement angle of the folding rudder 70;

[0067] The tensile force sensor 209 is located on the side of the tension spring 405, and the tensile force sensor 209 is used to measure the tensile force of the tension spring 405;

[0068] The acquisition card 202 is used to acquire the signals of the angular displacement sensor 205 and the tensile force sensor 209;

[0069] The power supply 204 is used to supply power to the angular displacement sensor 205 and the tensile force sensor 209;

[0070] The cable 203 is used to connect the angular displacement sensor 205 and the tensile force sensor 209 to the acquisition card 202 and the power supply 204 respectively, and connect the acquisition card 202 to the computer 201;

[0071] The computer 201 is used to control the acquisition card 202 to acquire the signals of the angular displacement sensor 205 and the tensile force sensor 209.

[0072] The rudder surface limiting assembly 30 includes a limiting pin shaft 301, a limiter mounting base 302, a locking screw 303, a limiter snap ring 304, a fixing screw 305 and a rope 306. The limiter mounting base 302 is installed at an appropriate position on the panel 101 of the workbench 10 through the fixing screw 305. The limiter snap ring 304 is installed on the limiter mounting base 302 and can be adjusted in height as required. The locking screw 303 is arranged on the limiter snap ring 304. The limiter snap ring 304 can be fixed on the limiter mounting base 302 through the locking screw 303, so as to restrict the moving rudder 702 at different working angles. The limiting pin shaft 301 is installed on the convex platform on one side of the limiter snap ring 304 in a sliding connection manner. The limiting pin shaft 301 is used to restrict the moving rudder 702. The rope 306 is connected to one end of the limiting pin shaft 301. Pulling the rope 306 can release the restriction on the moving rudder 702.

[0073] The loading component 40 includes a tension adjusting nut 401, a screw rod 402, a connecting bolt 403, a first spring mounting block 404, a tension spring 405, a second spring mounting block 406, a first wire rope fixing bolt 407, a first wire rope pressing plate 408, a wire rope 409, a spring group limiting rod 410, a limiting rod base 411, a limiting rod fixing bolt 412, a screw rod fixing base 413 and a base fixing bolt 414. The screw rod fixing base 413 is installed on the main mounting base 501 of the base component 50 through the base fixing bolt 414. One side of the screw rod 402 passes through the through hole on the screw rod fixing base 413 and installs the tension adjusting nut 401. By rotating the tension adjusting nut 401, the tension of the tension spring can be adjusted. The other side of the screw rod 402 is connected to one side of the tension sensor 209. One end of the connecting bolt 403 is connected to the first spring mounting block 404, and the other end of the connecting bolt 403 is connected to the tension sensor 209 of the data sampling and analysis device 20. The connecting bolt 403 passes through the through hole on the first spring mounting block 404 and then is connected to the tension sensor 209. The connecting bolt 403 is a square head bolt. One end of the tension spring 405 is connected to the first spring mounting block 404, and the other end of the tension spring 405 is connected to the second spring mounting block 406. Four jacks are respectively provided on the first spring mounting block 404 and the second spring mounting block 406 for installing the tension spring 405. The wire rope 409 transmits the tension of the tension spring 405 to the rotating shaft 611 and converts it into torque. One end of the wire rope 409 is fixed on the second spring mounting block 406 through the first wire rope fixing bolt 407 and the first wire rope pressing plate 408, and the other end of the wire rope 409 is fixed on the rotating shaft 611 of the transmission component 60 through the second wire rope pressing plate 612 and the second wire rope fixing bolt 613;

[0074] The limiting rod base 411 is installed on the main mounting base 501 through the limiting rod fixing bolt 412 and can move along the length direction of the first waist-shaped hole 5011. The spring group limiting rod 410 is installed on the limiting rod base 411. When disassembling the tested folding rudder 70 in the state where the tension spring 405 is stretched, the limiting rod base 411 is adjusted to an appropriate position and fixed, and the spring group limiting rod 410 is inserted, then the movement of the second spring mounting block 406 can be restricted. The spring group limiting rod 410 is located in the middle of the tension spring 405. The spring group limiting rod 410 can restrict the contraction of the tension spring 405 when replacing the folding rudder 70 under the loading state of the tension spring 405, so that the test can be directly carried out after replacing the next tested folding rudder 70.

[0075] The base assembly 50 is composed of a main mounting base 501, a folding rudder base bolt 502, a main base bolt 503, a folding rudder base 504, a folding rudder fixing bolt 505, a folding rudder mounting gasket 506, a rotating shaft base 507 and a rotating shaft base bolt 508. The main mounting base 501 is fixed on the panel 101 of the workbench 10 through the main base bolt 503. A first waist-shaped hole 5011 and a second waist-shaped hole 5012 are provided above the main mounting base 501. The main mounting base 501 is L-shaped. A first waist-shaped groove 5013 is provided at the position corresponding to the first waist-shaped hole 5011 below the main mounting base 501, and a second waist-shaped groove 5014 is provided at the position corresponding to the second waist-shaped hole 5012 below the main mounting base 501. The combination of the first waist-shaped hole 5011 and the first waist-shaped groove 5013 is used to realize the position adjustment and fixing function of the limit rod base 411, and the combination of the second waist-shaped hole 5012 and the second waist-shaped groove 5014 is used to realize the position adjustment and fixing function of the folding rudder base 504. The folding rudder base 504 is installed on the main mounting base 501 through the folding rudder base bolt 502. A folding rudder fixing bolt 505 and a folding rudder mounting gasket 506 are provided on the folding rudder base 504. The tested folding rudder 70 is fixed on the folding rudder base 504 through the folding rudder fixing bolt 505 and the folding rudder mounting gasket 506. The rotating shaft base 507 is installed on the main mounting base 501 through the rotating shaft base bolt 508 to fix the rotating shaft 611 and the angular displacement sensor bracket 207.

[0076] The main mounting base 501 is located on the panel 101 of the workbench 10. Four waist-shaped holes are provided above the main mounting base 501, and four waist-shaped grooves are provided at the corresponding positions below, to realize the position adjustment function of the folding rudder base 504 and the limit rod base 411;

[0077] The folding rudder base 504 is located on the main mounting base 501. The folding rudder base 504 is used to fix the tested folding rudder 70 on the main mounting base 501. When it is necessary to switch the rudder surfaces for left folding and right folding for testing, only need to disassemble the folding rudder base 504, rotate it 180° and install and fix it again. For folding rudder surfaces with different installation interfaces, only need to machine a corresponding folding rudder base 504 for its interface, and then it can be installed on this device for testing;

[0078] The rotating shaft base 507 is located on the main mounting base 501. The rotating shaft base 507 is used to fix the rotating shaft 611 and the angular displacement sensor bracket 207.

[0079] The transmission assembly 60 includes a tail vertebra set screw 601, a tail vertebra adapter 602, a first connecting shaft 603, a sleeve 604, a sleeve set screw 605, a universal joint coupling 606, a coupling set screw 607, and a second connecting shaft 608. The tail vertebra set screw 601 is connected to the tail vertebra adapter 602. The tail vertebra adapter 602 is installed on the movable rudder 702 through the tail vertebra set screw 601 and serves as an interface between the movable rudder 702 and other transmission components. One side of the first connecting shaft 603 is connected to the tail vertebra adapter 602 through the sleeve 604. The sleeve 604 is provided with a sleeve set screw 605. Tightening the sleeve set screw 605 can reduce the movement clearance of the sleeve 604 to improve the transmission accuracy. The other side of the first connecting shaft 603 is connected to the universal joint coupling 606 and fixed with a coupling set screw 607. When replacing the tested folding rudder 70 of the same model for testing, only need to loosen the sleeve set screw 605 and remove the sleeve 604 from the tail vertebra adapter 602. At this time, remove the folding rudder fixing bolt 505 to replace the new tested folding rudder 70. The other side of the universal joint coupling 606 is connected to the second connecting shaft 608. Using the universal joint coupling 606 in the transmission assembly 60 can reduce the influence caused by the non-coincidence of the axis of the movable rudder 702 and the axis of the rotating shaft 611. One side of the second connecting shaft 608 is connected to the rotating shaft 611 and fixed by a locking nut 609.

[0080] The inner side of the locking nut 609 is provided with a conical surface that cooperates with the outer side of the rotating shaft 611, and together with the groove 6101 on the rotating shaft 611, it realizes the locking of the second connecting shaft 608. The rotating shaft 611 is installed on the rotating shaft base 507 of the base assembly 50 through a bearing 610, enabling the rotating shaft 611 to rotate freely. One end of the rotating shaft 611 is provided with a second wire rope pressing plate 612, a second wire rope fixing bolt 613, and a sensor set screw 614. The wire rope 409 is fixed on the rotating shaft 611 through the second wire rope pressing plate 612 and the second wire rope fixing bolt 613. There is a blind hole for installing the angular displacement sensor 205 on the right side of the rotating shaft 611. The sensor set screw 614 can lock the input shaft of the angular displacement sensor 205.

[0081] The tail vertebra adapter 602 is installed on the surface of the tested movable rudder 701, and the tail vertebra adapter 602 serves as a connection interface between the folding rudder 70 and other transmission components;

[0082] The universal joint coupling 606 is located between the tail vertebra adapter 602 and the rotating shaft 611. The universal joint coupling 606 can reduce the influence caused by the non-collinearity of the axis of the folding rudder rotating shaft and the axis of the rotating shaft 611 of this testing device;

[0083] The first connecting shaft 603 and the second connecting shaft 608 are both square shafts. The two square shafts are respectively located at both ends of the universal joint coupling 606, and the two square shafts serve as interfaces between the universal joint coupling 606 and other transmission components;

[0084] A sleeve 604 is located between the caudal vertebra adapter 602 and the adjacent first connecting shaft 603. The sleeve 604 can slide along the first connecting shaft 603. After contacting both the caudal vertebra adapter 602 and the adjacent first connecting shaft 603 simultaneously, the sleeve set screw 605 on the sleeve 604 can be used to fix it. When replacing the tested folding rudder 70 of the same model, the sleeve 604 can be used for quick disassembly and connection.

[0085] A rotating shaft 611 is located between the angular displacement sensor 205 and the universal joint coupling 606 and is fixed on the base assembly 50. Blind holes are provided at both ends of the rotating shaft 611. One end is connected to the second connecting shaft 608, and the other end is connected to the angular displacement sensor 205. The rotating shaft 611 is used to transmit the movement when the folding rudder 70 unfolds and the torque generated by the loading assembly.

[0086] The method for dynamically testing the unfolding of a folding rudder using the above device includes the following steps:

[0087] Step 1, assemble this device;

[0088] Step 2, replace the caudal vertebra of the folding rudder 70 with the caudal vertebra adapter 602 and install the folding rudder 70 on the folding rudder base 504.

[0089] Step 3, move the folding rudder base 504 to the test position and fix it;

[0090] Step 4, use the sleeve 604 to connect the caudal vertebra adapter 602 and the first connecting shaft 603, and use the sleeve set screw 605 to fix the sleeve 604.

[0091] Step 5, open the data analysis software in the computer 201 and adjust the tension adjusting nut 401 according to the reading, and set the load of the loading assembly 40 as required.

[0092] Step 6, adjust the installation position of the limiter mounting base 302, and fold the folding rudder 70 to the specified angle and then fix it with the limit pin shaft 301.

[0093] Step 7, perform continuous sampling through the computer 201. Click the start continuous sampling button in the data analysis software, then release the fixation of the moving rudder surface 702. When the folding rudder 70 is fully unfolded, click the end continuous acquisition button in the data analysis software. At this time, the software ends the data acquisition, automatically saves the data, plots the graph, and calculates the unfolding time of the folding rudder.

[0094] Step 8, repeat steps 6 - 7 for multiple repeated tests to ensure the sampling accuracy.

[0095] The method for calculating the unfolding time of a folding rudder using the above device includes the following steps:

[0096] Step 1: Read the sequence of motion angle data A[1, 2, 3, ..., n] and the corresponding sequence of time data T[1, 2, 3, ..., n] collected during the unfolding process of the folding rudder 70,

[0097] [1, 2, 3, ..., n] are the index values of the data sequences;

[0098] Step 2: Search in the sequence of motion angle data A[1, 2, 3, ..., n] for the corresponding index value i when the motion angle is (A[n] - A[1]) / 2,

[0099] A[1] is the angle value collected when the folding rudder 70 is in the folded state, A[n] is the angle value collected when the folding rudder 70 is in the unfolded state, and (A[n] - A[1]) / 2 is the angle value collected when the folding rudder 70 is unfolded to half;

[0100] Step 3: Search in the sequence of motion angle data A[1, 2, 3, ..., n]. Starting from A[i], the index i decreases. When A[i] equals A[1] for the first time, stop the search and record the index value at this time as i s , then T[i s is the start time of the motion of the folding rudder 70;

[0101] Step 4: Search in the sequence of motion angle data A[1, 2, 3, ..., n]. Starting from A[i], the index i increases. When A[i] equals A[n] for the first time, stop the search and record the index value at this time as i e , then T[i e is the stop time of the motion of the folding rudder 70;

[0102] Step 5: Calculate the unfolding time T of the folding rudder 70 u = T[i e - T[i s .

Claims

1. A loadable folding rudder deployment dynamic test device, characterized in that: The invention comprises a workbench (10), a data sampling and analysis device (20), a rudder surface limiting assembly (30), a loading assembly (40), a base assembly (50) and a transmission assembly (60); the rudder surface limiting assembly (30) and the base assembly (50) are arranged on the workbench (10); the loading assembly (40), the transmission assembly (60) and the folding rudder (70) are arranged on the base assembly (50); and the folding rudder (70) is connected to the transmission assembly (60) and contacts the rudder surface limiting assembly (30).

2. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The workbench (10) comprises a panel (101), a support column (102) and a base plate (103); the panel (101) is connected to the base plate (103) via the support column (102); a threaded hole (1011) is arranged on the panel (101); and the panel (101) is respectively connected to a rudder surface limiting assembly (30) and a base assembly (50).

3. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The data sampling and analysis device (20) comprises a computer (201), an acquisition card (202), a cable (203), a sensor power supply (204), an angular displacement sensor (205), an angular displacement sensor bracket (207) and a tension sensor (209); the angular displacement sensor bracket (207) is mounted on a base assembly (50); the angular displacement sensor (205) is mounted on the angular displacement sensor bracket (207); the acquisition card (202) is respectively connected to the angular displacement sensor (205), the tension sensor (209) and the computer (201) via the cable (203); and the sensor power supply (204) is respectively connected to the angular displacement sensor (205) and the tension sensor (209) via the cable (203).

4. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The rudder surface limit assembly (30) comprises a limit pin (301), a limiter mounting base (302), a limiter snap ring (304) and a rope (306); the limiter mounting base (302) is mounted on a workbench (10); the limiter snap ring (304) is mounted on the limiter mounting base (302); the locking screw (303) is arranged on the limiter snap ring (304); the limit pin (301) is mounted on the limiter snap ring (304) in a sliding connection manner; and the rope (306) is connected to one end of the limit pin (301).

5. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The loading assembly (40) comprises a tension adjustment nut (401), a screw rod (402), a connecting bolt (403), a first spring mounting block (404), a tension spring (405), a second spring mounting block (406), a first steel wire rope fixing bolt (407), a first steel wire rope pressure plate (408), a steel wire rope (409), a spring assembly limiting rod (410), a limiting rod base (411) and a screw rod fixing base (413). The screw rod fixing base (413) is mounted on the base assembly (50). The tension adjustment nut (401) is mounted on one side of the screw rod (402). The connecting bolt (403) is mounted on one side of the screw rod (402). One end of the bolt (403) is connected to the first spring mounting block (404), the other end of the connecting bolt (403) is connected to the tension sensor (209) of the data sampling and analysis device (20), one end of the tension spring (405) is connected to the first spring mounting block (404), the other end of the tension spring (405) is connected to the second spring mounting block (406), one end of the wire rope (409) is fixed to the second spring mounting block (406) through the first wire rope fixing bolt (407) and the first wire rope pressure plate (408), and the other end of the wire rope (409) is fixed to the transmission assembly (60). The limiting rod base (411) is mounted on the main mounting base (501), and the spring assembly limiting rod (410) is mounted on the limiting rod base (411).

6. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The base assembly (50) is composed of a main mounting base (501), a folding rudder base (504), a folding rudder fixing bolt (505), a folding rudder mounting gasket (506), a rotating shaft base (507) and a rotating shaft base bolt (508). The main mounting base (501) is fixed on the workbench (10). A first waist-shaped hole (5011) and a second waist-shaped hole (5012) are arranged above the main mounting base (501). A corresponding waist-shaped hole (5011) and a second waist-shaped hole (5012) are arranged below the main mounting base (501). A first waist-shaped groove (5013) is arranged at the position of the first waist-shaped hole (5011), a second waist-shaped groove (5014) is arranged below the main mounting base (501) at a position corresponding to the second waist-shaped hole (5012), a folding rudder base (504) is mounted on the main mounting base (501), a folding rudder fixing bolt (505) and a folding rudder mounting gasket (506) are arranged on the folding rudder base (504), and a rotating shaft base (507) is mounted on the main mounting base (501).

7. A loadable folding rudder deployment dynamic test device as claimed in claim 1, characterized in that: The transmission assembly (60) comprises a coccyx set screw (601), a coccyx adapter (602), a first connecting shaft (603), a sleeve (604), a universal joint coupling (606) and a second connecting shaft (608); the coccyx set screw (601) is connected to the coccyx adapter (602); one side of the first connecting shaft (603) is connected to the coccyx adapter (602) via the sleeve (604); the other side of the first connecting shaft (603) is connected to the universal joint coupling (606); the other side of the universal joint coupling (606) is connected to the second connecting shaft (608); one side of the second connecting shaft (608) is connected to the rotating shaft (611) and is fixed via a locking nut (609).

8. A loadable folding rudder deployment dynamic test device as claimed in claim 7, characterized in that: The inner side of the locking nut (609) is provided with a conical surface which matches with the outer side of the rotating shaft (611); the rotating shaft (611) is installed on the base assembly (50) through a bearing (610); and a second wire rope pressure plate (612), a second wire rope fixing bolt (613) and a sensor fixing screw (614) are provided at one end of the rotating shaft (611).

9. A method for dynamically testing the deployment of a folding rudder according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, assembling the device; Step 2, replacing the tail vertebra of the folding rudder (70) with the tail vertebra adapter (602), and installing the folding rudder (70) on the folding rudder base (504); Step 3, moving the folding rudder base (504) to a test position and fixing it; Step 4, use a sleeve (604) to connect the coccyx adapter (602) and the first connecting shaft (603), and use a sleeve set screw (605) to fix the sleeve (604); Step 5, setting the load of the loading assembly (40) as required through the computer (201) and the tension adjustment nut (401); Step 6, adjusting the installation position of the stopper installation base (302), and folding the folding rudder (70) to a specified angle and fixing it with the stopper pin (301); Step 7, sampling is performed by the computer (201), and then the fixing of the dynamic rudder surface (702) is released, and the sampling is terminated when the folding rudder (70) is fully unfolded; Step 8, repeat steps 6-7 and conduct multiple repeated tests to ensure sampling accuracy.

10. A method for calculating the deployment time of a folding rudder using the device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, reading the motion angle data sequence A[1,2,3,...,n] and the corresponding time data sequence T[1,2,3,...,n] collected during the unfolding process of the folding rudder (70), [1,2,3,...,n] is the index value of the data sequence; Step 2: Search the motion angle data sequence A[1,2,3,...,n] for the index value i corresponding to the motion angle of (A[n]-A[1]) / 2. A[1] is an angle value collected when the folding rudder (70) is in a folded state, A[n] is an angle value collected when the folding rudder (70) is in an unfolded state, and (A[n]-A[1]) / 2 is an angle value collected when the folding rudder (70) is unfolded to half. Step 3: Search in the motion angle data sequence A[1,2,3,...,n], starting from A[i], with index i decreasing, and stop searching when A[i] equals A[1] for the first time and record the index value at that time as i s , then T[i s ] is the time when the folding rudder (70) starts to move; Step 4: Search in the motion angle data sequence A[1,2,3,...,n], starting from A[i], with index i increasing, and stop searching when A[i] equals A[n] for the first time and record the index value at that time as i e , then T[i e ] is the time when the folding rudder (70) stops moving; Step 5, calculate the deployment time T of the folding rudder (70) u =T[i e ]-T[i s ].

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