High-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis

Abstract

The invention discloses a high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis, and belongs to the field of detection equipment, the high-speed rotating viscoelastic plate mechanical property testing device comprises a base, a supporting part connected to the base and a fixing part connected to one side of the supporting part; the fixing part comprises a fixing base connected with the supporting part, two extending frames fixedly connected to one side of the fixing base, a first sliding base, a second sliding base and two sets of limiting plug pins, wherein the first sliding base and the second sliding base are connected into the two extending frames in a sliding mode respectively, and the two sets of limiting plug pins are inserted into the two extending frames respectively and limit the first sliding base and the second sliding base. Vibration data generated in the high-speed rotation process of the viscoelastic plate is collected through a laser sensor and a vibration sensor; meanwhile, the position of the testing part on the column body can be changed through the motor I, so that the boundary constraint or supporting rigidity borne by the viscoelastic plate is changed, different structure working conditions are simulated, and the data verification capability of the testing device is improved by obtaining vibration data of different structure working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection equipment, more particularly, to a high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis. BACKGROUND

[0002] Viscoelastic plate is a material specially used for damping layer, whose characteristics are closely related to temperature and frequency, and it exhibits both elastic and viscous deformation mechanisms under external force, so that it has excellent damping performance under certain conditions. Due to its unique damping characteristics, viscoelastic plate is widely used in important industrial fields such as aviation, aerospace and shipbuilding that require high damping. Due to the complexity and diversity of viscoelastic materials, the non-linear vibration parameters of viscoelastic plate need to be detected during research and development.

[0003] In order to more conveniently test the performance of viscoelastic plate, the prior art (Chinese invention patent application publication No. CN120445559A) discloses a high-speed rotating viscoelastic plate nonlinear vibration detection device, which can compare and analyze the vibration characteristics of viscoelastic plate, and to a certain extent, reduce the detection error. However, the current performance testing equipment for viscoelastic plate tests the viscoelastic plate in a single working condition, for example, the above-mentioned existing device, the viscoelastic plate is fixed on the driving rod, and the driving rod is rotated at high speed to test the vibration parameters of the viscoelastic plate. Only a single working condition data point test can be provided, resulting in weak data verification ability of the testing device, and the performance of the viscoelastic plate in multiple working conditions cannot be tested. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide a high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis.

[0005] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0006] A high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis, comprising a base, a support part connected to the base, and a fixed part connected to one side of the support part; The fixed part comprises a fixed seat connected to the support part, two extension frames fixed to one side of the fixed seat, a sliding seat one and a sliding seat two respectively slidingly connected inside the two extension frames, and two groups of limiting pins respectively inserted into the two extension frames and limiting the sliding seat one and the sliding seat two. The test assembly is connected between the sliding seat one and the sliding seat two, and comprises two bearings two which are rotationally connected in the sliding seat one and the sliding seat two respectively, a column body which is connected with the two bearings two at two ends respectively, a motor two which is connected on the side of the fixed seat one and has an output shaft connected with the lower end of the column body, a movable slot which is formed in the column body, a ball screw which is rotationally connected with the inner wall of the movable slot at two ends, a silk cover which is slidingly connected in the movable slot and is screwed on the outside of the ball screw, a test part which is slidingly connected on the outside of the column body and is connected with the silk cover, a motor one which is fixed on the upper end of the column body and has an output shaft connected with one end of the ball screw.

[0007] Further, a sliding groove is formed in the fixed seat, and a moving block is slidingly connected in the sliding groove, a lead screw one is rotationally connected in the sliding groove, and the lead screw one is screwed in the moving block, a driving part two is fixed on one side of the fixed seat, and the driving part two is connected with one end of the lead screw one through a transmission part, and the motor two is fixed on one side of the moving block.

[0008] Further, the lower end of the column body is connected with the output shaft of the motor two through a rotating part, and the lower end of the column body is provided with a slot one, a rotating part is rotationally connected in the sliding seat two, and the upper end of the rotating part is integrally formed with an insertion block which is inserted in the slot one, the lower end of the rotating part is provided with a slot two, and the output shaft of the motor two is inserted in the slot two.

[0009] Further, the upper end of the sliding seat two is connected with a conductive slip ring, the rotor end of the conductive slip ring is fixed on the outside of the column body, and the stator end of the conductive slip ring is fixed on the upper end of the sliding seat two.

[0010] Further, a plurality of extension ends are integrally formed on the outside of the silk cover, and one end of the plurality of extension ends is connected with the test part, the test part comprises a shell which is slidingly connected on the outside of the column body and has an inner wall fixed with the plurality of extension ends, an inner cavity which is formed in the shell, a limiting ring which is fixed on the inner wall of the inner cavity, a plurality of laser sensors which are fixed on the side wall of the limiting ring, a vibration sensor which is fixed on the inner bottom wall of the inner cavity, a pressing ring which is screwed on the inner wall of the inner cavity and is located above the limiting ring, a plurality of gratings which are fixed in the shell, an outer ring body which is fixed on the outer wall of the shell, a plurality of sensing plates which are fixed in the inner part of the outer ring body and correspond to the plurality of gratings, and a cover which is fixed on the upper end of the shell through bolts.

[0011] Further, the inner wall of the inner cavity is further fixed with a temperature sensor, and the temperature sensor, the vibration sensor, the laser sensor and the sensing plate are connected with the rotor end of the conductive slip ring.

[0012] Further, the support part comprises a stand which is fixed on the upper end of the base, a rotating part which is rotationally connected on one side of the stand, a driving part one which is fixed on the other side of the stand, a bearing one which connects the rotating part with the stand, and an electromagnetic disc which is fixed in the stand, and the output shaft of the driving part one penetrates the stand and is connected with the rotating part.

[0013] Further, the lower end of the shell and the upper end of the cover are provided with grooves, and the grooves are fixedly connected with fans two, the lower end of the shell and the upper end of the cover are connected with side flow components, and the side flow components include a plurality of guide columns, a fixed ring fixedly connected to one end of the plurality of guide columns, a screw rod two rotatably connected to one side of the fixed ring, a motor three fixedly connected to one side of the fixed ring and connected with the screw rod two, a movable ring movably sleeved outside the plurality of guide columns and screwed outside the screw rod two, and a sealing plug fixedly connected to one side of the movable ring and plugged into the groove.

[0014] Further, the other end of the guide column in the two side flow components is fixedly connected to the lower end of the shell and the upper end of the cover, respectively, and the other end of the two screw rods two is rotatably connected to the lower end of the shell and the upper end of the cover, respectively, and the motor three is connected to the rotor end of the conductive slip ring.

[0015] Further, the inside of the shell and the outer ring body is provided with a plurality of groove bodies, the groove body in the inside of the shell is fixedly connected with a solenoid valve, and the groove body in the inside of the outer ring body is fixedly connected with a fan one, and the solenoid valve and the fan one are connected to the rotor end of the conductive slip ring.

[0016] Compared with the prior art, the beneficial effects of the present application are: (1) The test assembly is provided, the motor two drives the column, the test part and the viscoelastic plate fixedly connected to the inside of the test part rotate, the vibration data generated by the viscoelastic plate during high-speed rotation is collected through the laser sensor and the vibration sensor; at the same time, the motor one can change the position of the test part on the column, so as to change the boundary constraint or support stiffness of the viscoelastic plate, simulate different structure conditions (such as end cantilever, shaft middle loading, loading close to support, etc.), reflect the distribution difference of vibration energy in real system operation, find the most unstable or resonant installation area through comparison test; through obtaining vibration data of different structure conditions, the data verification ability of the test device is improved.

[0017] (2) The support part is provided, the fixed part and the column can be driven to rotate through the rotating part, the posture of the column is controlled from vertical to horizontal, the dimension of the test condition is widened, the vibration response of the viscoelastic plate is closer to the complex dynamic behavior of the real equipment under various postures and loads, not only the dynamic condition of the viscoelastic plate under different postures can be simulated, but also the change of vibration parameters (such as natural frequency, amplitude) in the process can be monitored, the data is more rich, and the data verification ability of the device is improved.

[0018] (3) The side flow assembly is arranged, air in the shell body can flow through the fan two inside the cover body and the shell body, the air flow environment of the viscoelastic plate in actual flight or work can be simulated; when the air flow formed by the fan passes through the rotating viscoelastic plate, periodic aerodynamic force pulsation is generated on the plate surface, which interacts with the vibration mode of the viscoelastic plate itself, so that the influence of air flow velocity and direction on plate surface amplitude, damping and resonance frequency is facilitated; meanwhile, the viscoelastic material has temperature rise in work (such as high-speed rotation, friction or self-heating), the air flow can take away part of the heat, the actual thermal-force-flow coupling environment is simulated, and the dynamic influence of temperature on viscoelastic modulus and other performance parameters can be studied. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 It is the fixed part structure schematic diagram of the application; Figure 3 It is the test assembly structure schematic diagram of the application; Figure 4 It is the rotating part, plug block, slot one and slot two structure schematic diagram of the application; Figure 5 It is the wire sleeve, extension end and damping sleeve structure schematic diagram of the application; Figure 6 It is the test part structure schematic diagram of the application; Figure 7 It is the compression ring and electromagnetic valve structure schematic diagram of the application; Figure 8 It is the support part structure schematic diagram of the application; Figure 9 It is the side flow assembly structure schematic diagram of the application; Figure 10 It is the movable ring and sealing plug structure schematic diagram of the application; Figure 11 It is the fan one and grid structure schematic diagram of the application; Explanation of reference numerals in the drawing: 1, base; 2, support; 21, rotating part; 22, pedestal; 23, drive part one; 24, bearing one; 25, electromagnetic disc; 3, fixed part; 31, fixed seat; 32, extension frame; 33, sliding groove; 34, sliding seat one; 35, sliding seat two; 351, rotating part; 352, plug; 353, slot one; 36, limit pin; 37, drive part two; 38, lead screw one; 39, moving block; 4, test assembly; 41, column; 411, slot two; 42, bearing two; 43, movable slot; 44, conductive slip ring; 45, test part; 451, shell; 452, cover; 453, inner cavity; 454, limit ring; 455, laser sensor; 456, grid; 457, outer ring body; 458, vibration sensor; 459, compression ring; 46, motor one; 47, ball screw; 48, motor two; 49, silk cover; 491, extension end; 5, fan one; 6, temperature sensor; 7, lateral flow assembly; 71, slot; 72, fan two; 73, guide column; 74, fixed ring; 75, lead screw two; 76, motor three; 77, movable ring; 78, sealing plug; 8, electromagnetic valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1 to 11 A high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis, comprising a base 1, a support 2 connected to the base 1, and a fixed part 3 connected to one side of the support 2, The fixed part 3 comprises a fixed seat 31 connected to the support 2, two extension frames 32 fixed to one side of the fixed seat 31, a sliding seat one 34 and a sliding seat two 35 respectively slidingly connected inside the two extension frames 32, and two sets of limit pins 36 respectively inserted into the two extension frames 32 and limiting the sliding seat one 34 and the sliding seat two 35; The slide one 34 and the slide two 35 are connected with a test assembly 4, and the test assembly 4 comprises two bearing two 42 which are rotatably connected in the slide one 34 and the slide two 35 respectively, a column 41 which is connected with the inner ring of the two bearing two 42 respectively, a motor two 48 which is connected on the side of the fixed seat 31 and the output shaft of which is connected with the lower end of the column 41, a movable slot 43 which is opened in the column 41, a ball screw 47 which is rotatably connected with the inner wall of the movable slot 43 at both ends, a silk cover 49 which is slidably connected in the movable slot 43 and is screwed on the outside of the ball screw 47, a test part 45 which is slidably connected on the outside of the column 41 and is connected with the silk cover 49, a motor one 46 which is fixed on the upper end of the column 41 and the output shaft of which is connected with one end of the ball screw 47.

[0022] The outside of the silk cover 49 is integrally formed with a plurality of extension ends 491, and one end of the plurality of extension ends 491 is connected with the test part 45, the test part 45 comprises a shell 451 which is slidably connected on the outside of the column 41 and the inner wall of which is fixed with the plurality of extension ends 491, an inner cavity 453 which is opened in the shell 451, a limiting ring 454 which is fixed on the inner wall of the inner cavity 453, a plurality of laser sensors 455 which are fixed on the side wall of the limiting ring 454, a vibration sensor 458 which is fixed on the inner bottom wall of the inner cavity 453, a pressing ring 459 which is screwed on the inner wall of the inner cavity 453 and is located above the limiting ring 454, a plurality of gratings 456 which are fixed in the shell 451, an outer ring body 457 which is fixed on the outer wall of the shell 451, a plurality of induction plates which are fixed in the inner part of the outer ring body 457 and correspond to the plurality of gratings 456, a cover 452 which is fixed on the upper end of the shell 451 by bolts.

[0023] The inner wall of the inner cavity 453 is further fixed with a temperature sensor 6.

[0024] By adopting the above technical scheme, the motor two 48 drives the cylinder 41 to rotate, the cylinder 41 drives the sleeve 49 and the shell 451 to rotate synchronously, the viscoelastic plate is located between the limiting ring 454 and the pressing ring 459, the viscoelastic plate is pressed on the limiting ring 454 by the pressing ring 459, and the viscoelastic plate can be rotated when the shell 451 rotates. The laser sensor 455 emits detection light outward to irradiate the viscoelastic plate, the light is projected onto the surface of the induction plate in the outer ring body 457 through the grid 456, and the viscoelastic plate can shield part of the light emitted by the laser sensor 455 in the vibration process. At this time, the light range on the surface of the induction plate changes, the position change of the light is recorded by the induction plate, so that the vibration amplitude and the vibration frequency of the viscoelastic plate can be recorded. Then, the rotation speed, the vibration frequency and the vibration amplitude of the viscoelastic plate are collected and analyzed, so that the nonlinear vibration parameters of the viscoelastic plate can be calculated. The vibration sensor 458 is located below the viscoelastic plate and can detect and record the vibration amplitude and the frequency of the viscoelastic plate. Then, the detection results are compared and analyzed with the detection results of the laser sensor 455, so that the test error can be further reduced, and the test precision of the viscoelastic plate can be improved. By controlling the motor one 46 to work, the ball screw 47 is driven to rotate, the ball screw 47 drives the sleeve 49 to move in the movable groove 43, so that the position of the shell 451 on the cylinder 41 is adjusted, the shell 451 and the viscoelastic plate can be moved to the upper, middle and lower parts of the cylinder 41, the installation position of the viscoelastic plate in the actual working condition is simulated, the boundary constraint or support stiffness of the viscoelastic plate is changed, different structure working conditions (such as end cantilever, shaft middle loading, loading close to support, etc.) are simulated, the distribution difference of vibration energy in the real system running is reflected, and the rotational vibration data of the viscoelastic plate in different positions is monitored. Through comparison test, the installation area most prone to instability or resonance is found. By obtaining the vibration data of different structure working conditions, the data verification ability of the test device is improved. The temperature sensor 6 can monitor the temperature in the inner cavity 453, the temperature of the inner cavity 453 can be monitored in real time, so that the temperature change of the viscoelastic plate during high-speed rotation can be known.

[0025] As shown in Figures 2-4 The fixed seat 31 is internally provided with a sliding groove 33, and a moving block 39 is slidably connected in the sliding groove 33. A lead screw one 38 is rotatably connected in the sliding groove 33, and the lead screw one 38 is screwed in the moving block 39. A driving part two 37 is fixedly connected to one side of the fixed seat 31, and the driving part two 37 is connected to one end of the lead screw one 38 through a transmission member. The motor two 48 is fixedly connected to one side of the moving block 39.

[0026] The lower end of the column 41 is connected with the output shaft of the motor 48 through a rotating piece 351, and the lower end of the column 41 is provided with a slot 353, the rotating piece 351 is rotatably connected in the slide block 35, and the upper end of the rotating piece 351 is integrally formed with an insertion block 352 which is inserted into the slot 353, and the lower end of the rotating piece 351 is provided with a slot 411, and the output shaft of the motor 48 is inserted into the slot 411.

[0027] The upper end of the slide block 35 is connected with a conductive slip ring 44, the rotor end of the conductive slip ring 44 is fixed on the outside of the column 41, and the stator end of the conductive slip ring 44 is fixed on the upper end of the slide block 35. The temperature sensor 6, the vibration sensor 458, the laser sensor 455 and the induction plate are connected with the rotor end of the conductive slip ring 44.

[0028] When the viscoelastic plate needs to be installed into the shell 451, the driving part 37 is controlled to work to drive the screw 38 to rotate, the screw 38 drives the moving block 39 to move downward in the sliding groove 33, the output shaft of the motor 48 is moved out of the slot 411, the limiting pin 36 is pulled out of the extension frame 32, the slide block 1 and the slide block 2 slide in the extension frame 32, the length of the extension frame 32 below the fixed seat 31 is greater than the length of the extension frame 32 above, so the slide block 1 is moved out of the extension frame 32 above, then the bearing 42 at the upper end of the column 41 and the slide block 1 are taken off from the column 41, the cover 452 is opened, the compression ring 459 is screwed out of the inner cavity 453, the viscoelastic plate is sleeved outside the column 41 and moved into the inner cavity 453, so that the viscoelastic plate is located on the limiting ring 454, the compression ring 459 is sleeved outside the column 41 and screwed on the inner wall of the inner cavity 453, so that the compression ring 459 compresses the viscoelastic plate, then the cover 452 is fixed on the shell 451, the bearing 42 is sleeved above the column 41, so that the slide block 1 is slid into the extension frame 32 above, and the slide block 1 and the slide block 2 are limited by the limiting pin 36; it should be noted that the upper and lower bearings 42 are movably sleeved at the upper and lower ends of the column 41, recesses are formed in the inner wall of the inner shaft of the bearing 42, and flanges are integrally formed on the outer surfaces of the upper and lower ends of the column 41 and inserted into the recesses, the recesses and the flanges are not shown in the drawings, and the recesses and the flanges have the same principle as the slot 353 and the insertion block 352.

[0029] As Figure 1 And Figure 8As shown, the support part 2 comprises a pedestal 22 fixed on the upper end of the base 1, a rotating part 21 rotatably connected on one side of the pedestal 22, a driving part one 23 fixed on the other side of the pedestal 22, a bearing one 24 connecting the rotating part 21 and the pedestal 22, an electromagnetic disc 25 fixed in the interior of the pedestal 22, and the output shaft of the driving part one 23 penetrates the pedestal 22 and is connected with the rotating part 21.

[0030] By adopting the above technical scheme, the rotating part 21 can be driven to rotate by the driving part one 23, and the fixed part 3 and the test assembly 4 can be driven to rotate when the rotating part 21 rotates, and the column body 41 changes from the vertical state to the horizontal state. When the adjustment of the column body 41 is completed, the electromagnetic disc 25 is controlled to work and generate a magnetic force to attract the rotating part 21, so as to avoid the movement of the rotating part 21 when the test assembly 4 works. The posture of the column body 41 is controlled from vertical to horizontal, which widens the dimension of the test working condition, makes the vibration response of the viscoelastic plate closer to the complex dynamic behavior of the real equipment under various postures and loads, can not only simulate the dynamic working condition of the viscoelastic plate under different postures, but also can monitor the change of the vibration parameters (such as natural frequency and amplitude) in the process, the data is more abundant, and the data verification ability of the device is improved.

[0031] As shown in Figures 5-7 , Figure 9 and Figure 10 , the lower end of the shell 451 and the upper end of the cover 452 are both provided with a slot 71, and the slot 71 is fixed with a fan two 72. The lower end of the shell 451 and the upper end of the cover 452 are both connected with a side flow assembly 7, and the side flow assembly 7 comprises a plurality of guide columns 73, a fixed ring 74 fixed on one end of the guide columns 73, a lead screw two 75 rotatably connected on one side of the fixed ring 74, a motor three 76 fixed on one side of the fixed ring 74 and connected with the lead screw two 75, a movable ring 77 movably sleeved on the outside of the guide columns 73 and screwed on the outside of the lead screw two 75, and a sealing plug 78 fixed on one side of the movable ring 77 and plugged into the slot 71.

[0032] The other end of the guide column 73 in the two side flow assemblies 7 is respectively fixed on the lower end of the shell 451 and the upper end of the cover 452, and the other end of the two lead screw two 75 is respectively rotatably connected on the lower end of the shell 451 and the upper end of the cover 452. The motor three 76 is connected with the rotor end of the conductive slip ring 44.

[0033] By adopting the above technical solution, the control motor 76 drives the lead screw 75 to rotate, which in turn moves the movable ring 77. The movement of the movable ring 77 allows the sealing plug 78 to be removed from the slot 71. The control fan 72 operates, drawing external air into the inner cavity 453 within the cover 452, and expelling air from the inner cavity 453 within the shell 451, thus creating airflow within the inner cavity 453. This airflow simulates the airflow environment of a viscoelastic plate during actual flight or operation. When the airflow passes over the rotating viscoelastic plate, periodic aerodynamic pulsations are generated on the plate surface, which interacts with the viscoelastic plate... The inherent vibration modal interactions facilitate the study of the effects of airflow velocity and direction on the plate's amplitude, damping, and resonant frequency. Simultaneously, the viscoelastic material experiences temperature rise during operation (e.g., high-speed rotation, friction, or self-heating), and the airflow can carry away some of this heat, simulating a real-world thermo-mechanical-fluid coupling environment. This allows for the study of the dynamic effects of temperature on performance parameters such as the viscoelastic modulus. When the slots 71 of the shell 451 and cover 452 are open and the fan 72 is not operating, external air can normally enter the inner cavity 453, preventing it from being in a vacuum state. Under this natural ventilation condition, the vibration parameters of the viscoelastic plate can be monitored.

[0034] like Figure 6 , Figure 9 and Figure 11 As shown, multiple sets of grooves are formed inside the housing 451 and the outer ring 457. A solenoid valve 8 is fixedly connected in the groove inside the housing 451, and a fan 5 is fixedly connected in the groove inside the outer ring 457. Both the solenoid valve 8 and the fan 5 are connected to the rotor end of the conductive slip ring 44.

[0035] By adopting the above technical solution, multiple sets of tanks are located above, in the middle and below the viscoelastic plate, respectively. This allows the slots 71 of the shell 451 or cover 452 to be opened. Then, the solenoid valve 8 and fan 5 in one set of tanks are controlled to work. The solenoid valve 8 opens, and the fan 5 draws external air into the inner cavity 453 and discharges it from the slots 71 of the shell 451 or cover 452. The fluid enters from the side of the plate, passes through the vicinity of the plate, and is discharged from the top or bottom. This breaks the attached boundary layer near the plate surface, changes the local pressure and shear distribution, forms through flow, and changes the boundary layer. This simulates the "ventilation / exhaust" working condition in real equipment and studies the influence of through flow on vibration values.

[0036] The use method is as follows: the column 41 is driven to rotate by the motor 2 48, the column 41 drives the wire sleeve 49 and the shell 451 to rotate synchronously, the viscoelastic plate can be driven to rotate when the shell 451 rotates, the laser sensor 455 emits detection light outward to irradiate the viscoelastic plate, the light is projected to the surface of the induction plate in the outer ring body 457 through the grid 456, the viscoelastic plate can shield part of the light emitted by the laser sensor 455 in the vibration process, at this time, the light irradiation range of the surface of the induction plate changes, the position change of the light is recorded by the induction plate, so that the vibration amplitude and the vibration frequency of the viscoelastic plate can be recorded; the vibration sensor 458 located below the viscoelastic plate can detect and record the vibration amplitude and the vibration frequency of the viscoelastic plate; the ball screw 47 is driven to rotate by the control motor 1 46, the ball screw 47 can drive the wire sleeve 49 to move in the movable groove 43, so that the position of the shell 451 on the column 41 is adjusted, the shell 451 and the viscoelastic plate can be moved to the upper, middle and lower parts of the column 41, the installation position of the viscoelastic plate under actual working conditions is simulated, the boundary constraint or support stiffness of the viscoelastic plate is changed, and different structure working conditions are simulated; the rotating part 21 can be driven to rotate by the driving part 1 23, the fixed part 3 and the test assembly 4 can be driven to rotate when the rotating part 21 rotates, and the column 41 changes from the vertical state to the horizontal state, the control electromagnetic disc 25 is controlled to work and generate a magnetic force to attract the rotating part 21, so that the rotating part 21 is prevented from moving when the test assembly 4 works; the posture of the column 41 is controlled to change from vertical to horizontal, the dimension of the test working condition is widened; the screw rod 2 75 is driven to rotate by the control motor 3 76, the movable ring 77 is driven to move by the screw rod 2 75, the movable ring 77 can move to make the sealing plug 78 move out of the slot 71, the fan 2 72 is controlled to work, the fan 2 72 in the cover body 452 sucks the external air into the inner cavity 453, the fan 2 72 in the shell 451 exhausts the air in the inner cavity 453 outward, the air in the inner cavity 453 flows, and the airflow environment in which the viscoelastic plate is located in actual flight or work can be simulated.

[0037] The above merely illustrates the preferred embodiments of the present application; the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical scheme of the present application and the improvement concept thereof within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis, comprising a base (1), a support part (2) connected to the base (1), and a fixing part (3) connected to one side of the support part (2), characterized in that: The fixing part (3) includes a fixing seat (31) connected to the support part (2), two extension frames (32) fixed to one side of the fixing seat (31), a slide seat one (34) and a slide seat two (35) respectively slidably connected inside the two extension frames (32), and two sets of limiting pins (36) respectively inserted into the two extension frames (32) and limiting the slide seat one (34) and the slide seat two (35). A test assembly (4) is connected between the slide one (34) and the slide two (35), and the test assembly (4) includes two bearings two (42) rotatably connected inside the slide one (34) and the slide two (35), a column (41) with both ends connected to the inner rings of the two bearings two (42), a motor two (48) connected to one side of the fixed seat (31) and whose output shaft is connected to the lower end of the column (41), a movable groove (43) opened inside the column (41), a ball screw (47) rotatably connected to the inner wall of the movable groove (43) at both ends, a thread sleeve (49) slidably connected in the movable groove (43) and screwed to the outside of the ball screw (47), a test part (45) slidably connected to the outside of the column (41) and connected to the thread sleeve (49), and a motor one (46) fixed to the upper end of the column (41) and whose output shaft is connected to one end of the ball screw (47).

2. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 1, characterized in that: The fixed base (31) has a sliding groove (33) inside, and a moving block (39) is slidably connected inside the sliding groove (33). A lead screw (38) is rotatably connected inside the sliding groove (33), and the lead screw (38) is screwed inside the moving block (39). A second driving part (37) is fixedly connected to one side of the fixed base (31), and the second driving part (37) is connected to one end of the lead screw (38) through a transmission component. The second motor (48) is fixedly connected to one side of the moving block (39).

3. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 2, characterized in that: The lower end of the column (41) is connected to the output shaft of the second motor (48) via a rotating component (351), and the lower end of the column (41) is provided with a slot (353). The second slide (35) is rotatably connected to the rotating component (351), and the upper end of the rotating component (351) is integrally formed with a plug (352) that is inserted into the slot (353). The lower end of the rotating component (351) is provided with a slot (411), and the output shaft of the second motor (48) is inserted into the slot (411).

4. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 3, characterized in that: The upper end of the slide block two (35) is connected to a conductive slip ring (44). The rotor end of the conductive slip ring (44) is fixed to the outside of the column (41), and the stator end of the conductive slip ring (44) is fixed to the upper end of the slide block two (35).

5. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 4, characterized in that: The outer surface of the wire sleeve (49) is integrally formed with multiple extension ends (491), and one end of each extension end (491) is connected to the testing part (45). The testing part (45) includes a housing (451) that slides on the outside of the column (41) and whose inner wall is fixed to the multiple extension ends (491), an inner cavity (453) opened inside the housing (451), a limiting ring (454) fixed to the inner wall of the inner cavity (453), and multiple laser sensors (491) fixed to the side wall of the limiting ring (454). 55) Vibration sensor (458) fixed to the bottom wall of the inner cavity (453), pressure ring (459) screwed to the inner wall of the inner cavity (453) and located above the limiting ring (454), multiple grids (456) fixed inside the housing (451), outer ring (457) fixed to the outer wall of the housing (451), multiple sensing plates fixed inside the outer ring (457) and corresponding to multiple grids (456), and cover (452) fixed to the upper end of the housing (451) by bolts.

6. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 5, characterized in that: A temperature sensor (6) is also fixedly connected to the inner wall of the inner cavity (453), and the temperature sensor (6), vibration sensor (458), laser sensor (455), and sensing plate are all connected to the rotor end of the conductive slip ring (44).

7. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 6, characterized in that: The support part (2) includes a stand (22) fixed to the upper end of the base (1), a rotating part (21) rotatably connected to one side of the stand (22), a drive part (23) fixed to the other side of the stand (22), a bearing (24) connecting the rotating part (21) to the stand (22), and an electric disk (25) fixed inside the stand (22). The output shaft of the drive part (23) passes through the stand (22) and is connected to the rotating part (21).

8. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 7, characterized in that: The lower end of the housing (451) and the upper end of the cover (452) are both provided with slots (71), and a second fan (72) is fixedly connected in the slots (71). The lower end of the housing (451) and the upper end of the cover (452) are both connected with side flow components (7), and the side flow components (7) include multiple guide posts (73), a fixed ring (74) fixed to one end of multiple guide posts (73), a second screw (75) rotatably connected to one side of the fixed ring (74), a third motor (76) fixed to one side of the fixed ring (74) and connected to the second screw (75), a movable ring (77) movably sleeved outside the multiple guide posts (73) and screwed outside the second screw (75), and a sealing plug (78) fixed to one side of the movable ring (77) and inserted in the slots (71).

9. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 8, characterized in that: The other ends of the guide posts (73) in the two side flow assemblies (7) are fixed to the lower end of the housing (451) and the upper end of the cover (452), respectively, and the other ends of the two lead screws (75) are rotatably connected to the lower end of the housing (451) and the upper end of the cover (452), respectively. The motor (76) is connected to the rotor end of the conductive slip ring (44).

10. The high-speed rotating viscoelastic plate mechanical property testing device based on vibration response analysis according to claim 9, characterized in that: Multiple sets of grooves are provided inside the housing (451) and the outer ring (457). A solenoid valve (8) is fixedly connected in the groove inside the housing (451), and a fan (5) is fixedly connected in the groove inside the outer ring (457). The solenoid valve (8) and the fan (5) are both connected to the rotor end of the conductive slip ring (44).

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