Nonlinear vibration detection device for high-speed rotating viscoelastic plate

Abstract

The application discloses a kind of high-speed rotating viscoelastic plate nonlinear vibration detection device, belong to detection equipment field, including support seat, the support seat upper end outer surface is fixedly connected with shock pad, the shock pad upper end outer surface is fixedly connected with supporting plate, the support seat upper side is provided with contrast component, the contrast component includes the connecting plate fixedly connected with supporting plate inner surface, the connecting plate outer surface middle part is threadedly connected with adjusting rod, the adjusting rod outer surface upper side is equipped with through slot. By setting contrast component, by making viscoelastic plate with the same speed rotates, and the nonlinear vibration parameter of viscoelastic plate is detected and analyzed, to facilitate the contrast experiment of experimental personnel, to better analyze the influence of motor vibration on viscoelastic plate vibration parameter, to facilitate further comparative analysis and research on the vibration characteristics of viscoelastic plate, to be able to reduce detection error to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection equipment, more particularly, to a nonlinear vibration detection device of a high-speed rotating viscoelastic plate. BACKGROUND

[0002] The viscoelastic plate is a material specially used for damping layer, the characteristics of which are closely related to temperature and frequency, and under the action of external force, the viscoelastic plate simultaneously exhibits two deformation mechanisms of elasticity and viscosity, so that it has excellent damping performance under certain conditions. Due to its unique damping characteristics, the viscoelastic plate is widely used in important industrial fields such as aviation, aerospace and shipbuilding which require high damping.

[0003] Due to the complexity and diversity of viscoelastic materials, the nonlinear vibration parameters of the viscoelastic plate need to be detected during the research and development process. The nonlinear vibration analysis of the viscoelastic plate usually needs to use complex mathematical methods and numerical simulation techniques. For example, the Reddy high-order shear deformation theory and the von Kármán geometric nonlinear assumption can be used to establish the nonlinear control differential equations of the system, and then the analytical method (such as the direct multi-scale method) or the numerical method (such as the Runge-Kutta method, the differential quadrature method, etc.) is used to solve these equations to obtain the nonlinear vibration parameters of the system.

[0004] In order to obtain the required vibration parameters, the viscoelastic plate in high-speed rotating state needs to be simulated and detected by a detection device. In the detection process, a high-speed motor is usually used to drive the viscoelastic plate to rotate at high speed to simulate the actual working state of the viscoelastic plate, and the vibration frequency and amplitude of the viscoelastic plate are measured by laser vibration measurement or acoustic emission measurement method. However, in actual work, the high-speed motor as a power source will produce a certain vibration when running, and the vibration will be transmitted to the detection device, thereby affecting the vibration characteristics of the viscoelastic plate and even causing resonance, which will adversely affect the detection accuracy of the nonlinear vibration of the viscoelastic plate. SUMMARY

[0005] In view of the problems existing in the prior art, the purpose of the present application is to provide a nonlinear vibration detection device of a high-speed rotating viscoelastic plate. By setting a control component, the viscoelastic plate is rotated at the same speed, and the nonlinear vibration parameters of the viscoelastic plate are detected and analyzed, so that the experimenters can conduct a control experiment, thereby better analyzing the influence of motor vibration on the vibration parameters of the viscoelastic plate, facilitating further comparative analysis and research on the vibration characteristics of the viscoelastic plate, and thereby reducing the detection error to a certain extent.

[0006] To solve the above problems, the present application adopts the following technical solutions.

[0007] The utility model provides a kind of nonlinear vibration detection device of high-speed rotating viscoelastic plate, including support seat, the upper end outer surface of the support seat is fixedly connected with damping pad, the upper end outer surface of the damping pad is fixedly connected with supporting plate, the upper side of the support seat is provided with contrast component;

[0008] The contrast component includes a connecting plate fixedly connected to the inner surface of the supporting plate, a adjusting rod threadedly connected to the middle of the outer surface of the connecting plate, a through slot formed in the upper side of the outer surface of the adjusting rod, an installation plate rotatably connected to the lower end of the adjusting rod, a positioning hole formed in the outer surface of the installation plate, a positioning rod fixedly connected to the outer surface of the upper end of the support seat, a motor fixedly connected to the outer surface of the upper end of the installation plate, a drive rod fixedly connected to the upper end of the output shaft of the motor, a limiting plate fixedly connected to the outer surface of the drive rod, and an elastic plate placed on the outer surface of the upper end of the limiting plate.

[0009] Further, the number of connecting plates and adjusting rods is several groups and arranged in a ring array, the positioning rod is located directly below the positioning hole, the supporting plate and the damping pad are both in the shape of a circular ring, the damping pad is made of elastic rubber material, and the number of positioning rods and positioning holes is several groups and arranged in a ring array.

[0010] Further, a helical groove is formed in the middle of the outer surface of the drive rod, a clamping assembly is arranged on the outer side of the drive rod, the clamping assembly includes a locking sleeve in helical transmission connection with the outer surface of the drive rod, the lower end of the locking sleeve is in the shape of an opening, a suction cup is in contact with the outer surface of the upper end of the elastic plate, a sealing ring is fixedly connected to the inner surface of the suction cup, the suction cup and the sealing ring are both in the shape of a circular ring, the outer surface of the lower side of the locking sleeve is in rotational contact with the outer surface of the upper end of the suction cup, and the suction cup and the sealing ring are both made of elastic wear-resistant material.

[0011] Further, a displacement groove is formed in the outer surface of the upper end of the limiting plate, a clamping block is in sliding connection with the inner surface of the displacement groove, the clamping block is in the shape of an L structure, a spring is fixedly connected to the side of the outer surface of the clamping block close to the drive rod, the end of the spring away from the clamping block is fixedly connected to the inner surface of the displacement groove, the number of displacement grooves and clamping blocks is several groups and arranged in a ring array, the outer surface of the side of the clamping block away from the drive rod is in contact with the outer surface of the elastic plate, a top pipe is fixedly connected to the upper end of the inner surface of the locking sleeve, and the outer surface of the lower side of the top pipe is in rotational contact with the clamping block.

[0012] Further, a test assembly one is arranged on the upper side of the supporting plate, the test assembly one includes a fixing sleeve fixedly connected to the outer surface of the upper end of the supporting plate, a fixing cylinder fixedly connected to the outer surface of the upper end of the fixing sleeve, the elastic plate is located inside the fixing cylinder, an installation rack is fixedly connected to the inner surface of the lower end of the fixing cylinder, and the installation rack is in the shape of a circular ring.

[0013] Further, the outer surface of the mounting frame is fixedly connected with a laser sensor, a grid is arranged on the outer surface of the fixed sleeve, and a test box is fixedly connected to the outer surface of the upper end of the supporting plate outside the fixed sleeve, an inductive plate is fixedly connected to the inner surface of the test box, and the number of the inductive plate, the grid and the laser sensor is several groups and is arranged in a ring array.

[0014] Further, the lower side of the elastic plate is provided with a second test assembly, the second test assembly comprises a guide groove arranged on the outer surface of the lower end of the fixed cylinder, a guide rod is slidably connected to the inner surface of the guide groove, a vibration sensor is fixedly connected to the outer surface of the upper end of the guide rod, the number of the guide groove, the guide rod and the vibration sensor is several groups and is arranged in a ring array, and the vibration sensor is located at the lower side of the elastic plate.

[0015] Further, the lower side of the fixed cylinder is provided with an adjusting assembly, the adjusting assembly comprises a check ring fixedly connected to the outer surface of the fixed sleeve, a supporting plate is rotatably connected to the outer surface of the check ring in a damping mode, the supporting plate is in the shape of a circular ring, a limiting groove is arranged on the outer surface of the upper end of the supporting plate, the limiting groove is in the shape of a circular arc, a movable rod is fixedly connected to the outer surface of the lower end of the fixed cylinder, and the lower end of the movable rod is located inside the limiting groove.

[0016] Further, a swing rod is rotatably connected to the outer surface of the lower side of the guide rod, a jacking rod is rotatably connected to the end of the swing rod away from the guide rod, the outer surface of the lower end of the jacking rod is fixedly connected to the outer surface of the upper end of the supporting plate, the number of the swing rod and the jacking rod is several groups and is correspondingly distributed with the guide rod, an operation port is arranged on the outer surface of the test box, and the number of the operation port is several groups and is symmetrically distributed.

[0017] Further, the upper end of the test box is in the shape of an opening, the check ring is in the shape of a circular ring, a cover plate is clampingly connected to the upper end of the fixed cylinder, the lower end of the locking sleeve and the jacking pipe are in the shape of a circular arc, and the inductive plate, the grid and the laser sensor are linearly distributed.

[0018] Compared with the prior art, the advantages of the present application are that:

[0019] (1) The present scheme is provided with a control assembly, the viscoelastic plate is rotated at the same speed, the nonlinear vibration parameters of the viscoelastic plate are detected and analyzed, the experimenters can perform a control experiment, the influence of motor vibration on the vibration parameters of the viscoelastic plate can be better analyzed, the vibration characteristics of the viscoelastic plate can be further compared and analyzed, and the detection error can be reduced to a certain extent.

[0020] (2) The scheme is through setting test component one and test component two, detecting and recording the viscoelastic plate vibration parameters by using different ways, and then comparing and analyzing the test results with the test results of test component one, so that the test error can be further reduced, and the test precision of the viscoelastic plate can be improved;

[0021] (3) The scheme is through setting the adjusting assembly, the rotation of the supporting plate can drive the synchronous movement of the several groups of annular distributed vibration sensors, so as to adjust the position of the vibration sensor, so as to detect and analyze the vibration parameters of different positions of the viscoelastic plate, improve the detection precision of the detection device, and also improve the operation convenience of the detection device. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the present application;

[0023] Figure 2 It is the overall structure top view of the present application;

[0024] Figure 3 It is the Figure 2 A-A direction sectional view of the present application;

[0025] Figure 4 It is the Figure 1 B-B direction sectional view of the present application;

[0026] Figure 5 It is the internal structure schematic diagram of the fixed cylinder of the present application;

[0027] Figure 6 It is the Figure 5 Enlarged schematic diagram of C of the present application;

[0028] Figure 7 It is the Figure 3 Enlarged schematic diagram of D of the present application;

[0029] Figure 8 It is the Figure 5 Enlarged schematic diagram of E of the present application;

[0030] Figure 9 It is the Figure 4 Enlarged schematic diagram of F of the present application.

[0031] Explanation of reference numerals in the drawing:

[0032] 11, support seat; 12, test box; 13, operation port; 14, induction plate; 15, fixed cylinder; 16, cover plate; 17, drive rod; 18, locking sleeve; 19, elastic plate; 20, grid; 21, limiting plate; 22, displacement slot; 23, clamping block; 24, spring; 25, top pipe; 26, suction cup; 27, sealing ring; 28, damping pad; 29, supporting plate; 30, fixed sleeve; 31, motor; 32, connecting plate; 33, mounting plate; 34, adjusting rod; 35, through slot; 36, check ring; 37, support plate; 38, guide slot; 39, guide rod; 40, vibration sensor; 41, swing rod; 42, top rod; 43, movable rod; 44, limiting slot; 45, positioning hole; 46, positioning rod; 47, mounting frame; 48, laser sensor. DETAILED DESCRIPTION

[0033] 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 those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Please refer to Figures 1 to 9 A kind of nonlinear vibration detection device of high-speed rotating viscoelastic plate, including support seat 11, the outer surface of the upper end of the support seat 11 is fixedly connected with damping pad 28, the outer surface of the upper end of the damping pad 28 is fixedly connected with supporting plate 29, the upper side of the support seat 11 is provided with contrast component;

[0035] The contrast component includes connecting plate 32 fixedly connected with the inner surface of supporting plate 29, the outer surface of the connecting plate 32 is screw-connected with adjusting rod 34 in middle part, the outer surface of the adjusting rod 34 is provided with through slot 35 on upper side, the lower end of the adjusting rod 34 is rotatably connected with mounting plate 33, the outer surface of the mounting plate 33 is provided with positioning hole 45, the outer surface of the upper end of the support seat 11 is fixedly connected with positioning rod 46, the upper end of the outer surface of the mounting plate 33 is fixedly connected with motor 31, the output shaft upper end of the motor 31 is fixedly connected with drive rod 17, the outer surface of the drive rod 17 is fixedly connected with limiting plate 21, the outer surface of the upper end of the limiting plate 21 is placed with elastic plate 19.

[0036] The number of the connecting plate 32 and the adjusting rod 34 is several groups and is distributed in ring array, the positioning rod 46 is located directly below the positioning hole 45, the supporting plate 29 and the damping pad 28 are both circular, the damping pad 28 is made of elastic rubber material, the number of the positioning rod 46 and the positioning hole 45 is several groups and is distributed in ring array.

[0037] By adopting the above technical scheme, when detecting and analyzing the nonlinear vibration parameters of the viscoelastic plate 19 during high-speed rotation, the working state of the viscoelastic plate 19 needs to be simulated to make the viscoelastic plate 19 rotate at high speed. When the high-speed motor 31 drives the viscoelastic plate 19 to rotate at high speed, in order to test the influence of the installation position of the power source on the vibration parameters of the viscoelastic plate 19, a control assembly is arranged, the viscoelastic plate 19 is placed on the upper side of the limiting plate 21, and the limiting plate 21 supports the viscoelastic plate 19. After the viscoelastic plate 19 is stably clamped, the support seat 11 supports the supporting plate 29 through the damping pad 28, the supporting plate 29 supports the adjusting rod 34 through the connecting plate 32, the lower end mounting plate 33 of the adjusting rod 34 is rotationally connected to support the connecting plate 32, so that the connecting plate 32 is separated from the upper surface of the support seat 11. At this time, the positioning hole 45 is separated from the positioning rod 46, so that the mounting plate 33 is supported by the adjusting rod 34 and the connecting plate 32, and the motor 31 is fixed and supported by the mounting plate 33. At this time, the motor 31 acts as a power source, and its vibration will be transmitted to the detection device, so that the detection device and the motor 31 maintain the same vibration frequency. When performing a control experiment, the operator rotates the adjusting rod 34, and the adjusting rod 34 is threadedly connected with the connecting plate 32 and moves downward during rotation, so that the mounting plate 33 and the motor 31 are moved downward by the adjusting rod 34, and the mounting plate 33 is placed on the upper surface of the support seat 11. At this time, the positioning rod 46 on the surface of the support seat 11 is clamped into the positioning hole 45, and the mounting plate 33 is limited and supported by the positioning rod 46 cooperating with the positioning hole 45. At this time, the vibration of the motor 31 itself is only transmitted to the support seat 11, and the damping pad 28 can buffer and absorb between the support seat 11 and the supporting plate 29, so that the vibration frequency of the detection device is different from that of the power source. By rotating the two groups of viscoelastic plates 19 at the same speed and detecting and analyzing the nonlinear vibration parameters of the viscoelastic plates 19, the experimenter can perform a control experiment, so as to better analyze the influence of the vibration of the motor 31 on the vibration parameters of the viscoelastic plate 19, facilitate further comparative analysis and research on the vibration characteristics of the viscoelastic plate 19, and thus reduce the detection error to a certain extent.

[0038] As Figure 1 , Figure 3 With Figure 6As shown, the middle of the outer surface of the drive rod 17 is provided with a spiral groove, the outer side of the drive rod 17 is provided with a clamping assembly, the clamping assembly comprises a locking sleeve 18 which is in spiral transmission connection with the outer surface of the drive rod 17, the lower end of the locking sleeve 18 is open, the outer surface of the upper end of the elastic plate 19 is in contact with a suction cup 26, the inner surface of the suction cup 26 is fixedly connected with a sealing ring 27, the suction cup 26 and the sealing ring 27 are both annular, the outer surface of the lower side of the locking sleeve 18 is in rotational contact with the outer surface of the upper end of the suction cup 26, the suction cup 26 and the sealing ring 27 are both made of elastic wear-resistant material.

[0039] The outer surface of the upper end of the limiting plate 21 is provided with a displacement groove 22, the inner surface of the displacement groove 22 is in sliding connection with a clamping block 23, the clamping block 23 is in L-shaped structure, the outer surface of the clamping block 23 is fixedly connected with a spring 24 on the side close to the drive rod 17, the end of the spring 24 away from the clamping block 23 is fixedly connected with the inner surface of the displacement groove 22, the number of the displacement groove 22 and the clamping block 23 is several groups and is in annular array distribution, the outer surface of the side of the clamping block 23 away from the drive rod 17 is in contact with the outer surface of the elastic plate 19, the upper end of the inner surface of the locking sleeve 18 is fixedly connected with a top pipe 25, the outer surface of the lower side of the top pipe 25 is in rotational contact with the clamping block 23.

[0040] Through the above technical scheme, when the vibration characteristics of the viscoelastic plate 19 are detected and analyzed, in order to keep the state of the viscoelastic plate 19 stable, the clamping assembly is provided, the viscoelastic plate 19 is placed on the upper side of the limiting plate 21 before testing, then the operator rotates the locking sleeve 18, the locking sleeve 18 is in spiral transmission connection with the drive rod 17 through the spiral groove, and will move downward synchronously in the process of rotation, the locking sleeve 18 will extrude the suction cup 26 in the process of moving downward, so that the suction cup 26 and the sealing ring 27 are in contact with the upper surface of the viscoelastic plate 19, the limiting plate 21 can stably clamp the viscoelastic plate 19 in the upward and downward directions through the cooperation of the suction cup 26 and the sealing ring 27, the locking sleeve 18 will drive the top pipe 25 to move downward synchronously in the process of moving downward, the lower end of the top pipe 25 will contact the clamping block 23 and push the clamping block 23 to slide away from the drive rod 17, so that the clamping block 23 is in contact with the surface of the viscoelastic plate 19, the clamping block 23 will stretch the spring 24 in the process of moving, the displacement groove 22 can guide the clamping block 23 to slide, a plurality of annularly distributed clamping blocks 23 can clamp and fix the viscoelastic plate 19 in the horizontal direction, so as to further improve the clamping stability of the viscoelastic plate 19, through the setting of the clamping assembly, the viscoelastic plate 19 can be stably clamped in different directions, so as to ensure the stability of the viscoelastic plate 19 in the process of high-speed rotation, which helps to reduce the detection error caused by unstable clamping, and further improves the detection accuracy to a certain extent.

[0041] AsFigure 3 As shown, the upper side of the support plate 29 is provided with a test assembly I, which includes a fixed sleeve 30 fixedly connected with the outer surface of the upper end of the support plate 29, a fixed cylinder 15 fixedly connected with the outer surface of the upper end of the fixed sleeve 30, the elastic plate 19 located inside the fixed cylinder 15, and a mounting bracket 47 fixedly connected with the inner surface of the lower end of the fixed cylinder 15, which is annular.

[0042] The outer surface of the mounting bracket 47 is fixedly connected with a laser sensor 48, the outer surface of the fixed sleeve 30 is provided with a grid 20, the outer surface of the upper end of the support plate 29 is fixedly connected with a test box 12 outside the fixed sleeve 30, the inner surface of the test box 12 is fixedly connected with an induction plate 14, and the number of the induction plate 14, the grid 20 and the laser sensor 48 is several groups and arranged in a ring array.

[0043] By adopting the above technical scheme, the support plate 29 supports the fixed cylinder 15 through the fixed sleeve 30, the fixed cylinder 15 supports the laser sensor 48 through the mounting bracket 47, and when the viscoelastic plate 19 is detected in nonlinear vibration, the laser sensor 48 emits detection light outward to irradiate the viscoelastic plate 19, the light is projected to the surface of the induction plate 14 through the grid 20 on the surface of the fixed cylinder 15, and in the vibration process of the viscoelastic plate 19, the viscoelastic plate 19 will block part of the light emitted by the laser sensor 48, at which time the light range on the surface of the induction plate 14 will change, the position change of the light is recorded by the induction plate 14, so as to record the vibration amplitude and the vibration frequency of the viscoelastic plate 19, and then the rotation speed, the vibration frequency and the vibration amplitude of the elastic plate 19 are summarized and analyzed, so as to calculate the nonlinear vibration parameters of the viscoelastic plate 19, and through the setting of several groups of ring array distributed induction plates 14, grids 20 and laser sensors 48, multiple groups of detection data can be obtained, so as to help reduce the detection error.

[0044] As shown in the drawings, Figure 3 , Figure 5 and Figure 8 As shown, the lower side of the elastic plate 19 is provided with a test assembly II, which includes a guide groove 38 opened in the outer surface of the lower end of the fixed cylinder 15, a guide rod 39 slidingly connected with the inner surface of the guide groove 38, and a vibration sensor 40 fixedly connected with the outer surface of the upper end of the guide rod 39, and the number of the guide groove 38, the guide rod 39 and the vibration sensor 40 is several groups and arranged in a ring array, and the vibration sensor 40 is located on the lower side of the elastic plate 19.

[0045] By adopting the above technical scheme, in order to further improve the test precision, the test assembly two is arranged, the fixed barrel 15 is slidably guided to the guide rod 39 through the guide groove 38, the vibration sensor 40 is supported by the guide rod 39, the vibration sensor 40 is located on the lower side of the viscoelastic plate 19 and can detect and record the vibration amplitude and frequency of the viscoelastic plate 19, and then the detection result is compared and analyzed with the detection result of the test assembly one, so that the test error can be further reduced, and the test precision of the viscoelastic plate 19 can be improved.

[0046] As shown in Figure 8 The lower side of the fixed barrel 15 is provided with an adjusting assembly, the adjusting assembly comprises a check ring 36 fixedly connected with the outer surface of the fixed sleeve 30, a support plate 37 is rotatably connected to the outer surface of the check ring 36, the support plate 37 is annular, a limiting groove 44 is formed in the outer surface of the upper end of the support plate 37, the limiting groove 44 is arc-shaped, a movable rod 43 is fixedly connected to the outer surface of the lower end of the fixed barrel 15, and the lower end of the movable rod 43 is located in the limiting groove 44.

[0047] The outer surface of the guide rod 39 is rotatably connected with a swing rod 41, the swing rod 41 is rotatably connected with a jacking rod 42 away from the guide rod 39, the lower end of the jacking rod 42 is fixedly connected with the outer surface of the upper end of the support plate 37, the number of the swing rod 41 and the jacking rod 42 is several groups and is correspondingly distributed with the guide rod 39, and the outer surface of the test box 12 is provided with an operation port 13, the number of the operation port 13 is several groups and is symmetrically distributed.

[0048] The upper end of the test box 12 is open, the check ring 36 is annular, the upper end of the fixed barrel 15 is clamped and connected with a cover plate 16, the lower end of the locking sleeve 18 and the top pipe 25 are arc-shaped, and the inductive plate 14, the grid 20 and the laser sensor 48 are linearly distributed.

[0049] By adopting the above technical scheme, in the test process, in order to record the vibration amplitude difference of different positions of the viscoelastic plate 19, the position of the vibration sensor 40 needs to be adjusted, for this, the adjusting assembly is arranged, in work, the fixed sleeve 30 supports the rotation of the support plate 37 through the stop ring 36, the support plate 37 is connected with the stop ring 36 in damping rotation, when there is no external force, the support plate 37 will keep static state, when adjusting the position of the vibration sensor 40, the operator rotates the support plate 37 through the operation port 13 on the surface of the test box 12, the support plate 37 will drive the synchronous movement of the limiting groove 44 on its surface in the process of rotation, the fixed cylinder 15 limits the support plate 37 through the movable rod 43 matched with the limiting groove 44, so that the support plate 37 can only rotate a certain angle, the top rod 42 is fixedly connected with the support plate 37 at the lower end, the support plate 37 will drive the synchronous movement of the top rod 42, the top rod 42 will drive the swing rod 41 to swing in the process of movement, the swing rod 41 pulls the guide rod 39 to slide linearly in the guide groove 38, so as to adjust the position of the vibration sensor 40 through the guide rod 39, by arranging the adjusting assembly, the rotation of the support plate 37 can drive the synchronous movement of the several groups of annular distributed vibration sensors 40, so as to adjust the position of the vibration sensor 40, in order to detect and analyze the vibration parameters of different positions of the viscoelastic plate 19, which can improve the operation convenience of the detection device while improving the detection precision of the detection device, the cover plate 16 can cover the upper end of the fixed cylinder 15, which can reduce the influence of external noise on the vibration parameters of the viscoelastic plate 19, and also facilitate the propagation of light in the fixed cylinder 15, so as to ensure the detection precision.

[0050] The use method is that when the nonlinear vibration parameters of the viscoelastic plate 19 during high-speed rotation are detected and analyzed, first, the viscoelastic plate 19 is placed on the upper side of the limiting plate 21, the viscoelastic plate 19 is stably clamped in the up-down direction through the limiting plate 21 cooperating with the suction cup 26 and the sealing ring 27, then the motor 31 and the driving rod 17 drive the viscoelastic plate 19 to rotate at high speed, the laser sensor 48 emits detection light outward to irradiate the viscoelastic plate 19, the light is projected to the surface of the inductive plate 14 through the grid 20 on the surface of the fixed cylinder 15, the inductive plate 14 records the change of the light position, the vibration sensor 40 located on the lower side of the viscoelastic plate 19 can detect and record the vibration amplitude and frequency of the viscoelastic plate 19, the rotation of the supporting plate 37 can drive the vibration sensors 40 to move synchronously, so that the position of the vibration sensor 40 is adjusted, so as to detect and analyze the vibration parameters of different positions of the viscoelastic plate 19, the position of the motor 31 is adjusted, so that the detection device and the motor 31 have the same vibration frequency, so as to facilitate the researchers to carry out the contrast experiment, so as to better analyze the influence of the vibration of the motor 31 on the vibration parameters of the viscoelastic plate 19, and facilitate the further comparative analysis and research on the vibration characteristics of the viscoelastic plate 19.

[0051] 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 according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for the non-linear vibration detection of a high-speed rotating viscoelastic plate comprising a support seat (11), characterized in that: The outer surface of the upper end of the support seat (11) is fixedly connected with a damping pad (28), the outer surface of the upper end of the damping pad (28) is fixedly connected with a supporting plate (29), and the upper side of the support seat (11) is provided with a contrast assembly; The contrast assembly comprises a connecting plate (32) fixedly connected with the inner surface of the supporting plate (29), the outer surface of the connecting plate (32) is threadedly connected with an adjusting rod (34) in the middle, the outer surface of the adjusting rod (34) is provided with a through groove (35) on the upper side, the lower end of the adjusting rod (34) is rotatably connected with a mounting plate (33), the outer surface of the mounting plate (33) is provided with a positioning hole (45), the outer surface of the upper end of the support seat (11) is fixedly connected with a positioning rod (46), the outer surface of the upper end of the mounting plate (33) is fixedly connected with a motor (31), the output shaft of the motor (31) is fixedly connected with a driving rod (17) at the upper end, the outer surface of the driving rod (17) is fixedly connected with a limiting plate (21), and the outer surface of the upper end of the limiting plate (21) is placed with an elastic plate (19); The number of the connecting plate (32) and the adjusting rod (34) is several groups and is arranged in a ring array, the positioning rod (46) is located directly below the positioning hole (45), the supporting plate (29) and the damping pad (28) are both circular, the damping pad (28) is made of elastic rubber material, and the number of the positioning rod (46) and the positioning hole (45) is several groups and is arranged in a ring array; The outer surface of the driving rod (17) is provided with a spiral groove in the middle, the outer side of the driving rod (17) is provided with a clamping assembly, the clamping assembly comprises a locking sleeve (18) in screw transmission connection with the outer surface of the driving rod (17), the lower end of the locking sleeve (18) is open, the outer surface of the upper end of the elastic plate (19) is in contact with a suction cup (26), the inner surface of the suction cup (26) is fixedly connected with a sealing ring (27), the suction cup (26) and the sealing ring (27) are both circular, the outer surface of the lower side of the locking sleeve (18) is in rotational contact with the outer surface of the upper end of the suction cup (26), and the suction cup (26) and the sealing ring (27) are both made of elastic wear-resistant material; The outer surface of the upper end of the limiting plate (21) is provided with a displacement groove (22), the inner surface of the displacement groove (22) is slidably connected with a clamping block (23), the clamping block (23) is in L-shaped structure, the outer surface of the clamping block (23) is fixedly connected with a spring (24) on the side close to the driving rod (17), one end of the spring (24) away from the clamping block (23) is fixedly connected with the inner surface of the displacement groove (22), the number of the displacement groove (22) and the clamping block (23) is several groups and is arranged in a ring array, the outer surface of the side of the clamping block (23) away from the driving rod (17) is in contact with the outer surface of the elastic plate (19), the inner surface of the upper end of the locking sleeve (18) is fixedly connected with a jacking pipe (25), and the outer surface of the lower side of the jacking pipe (25) is in rotational contact with the clamping block (23). When the control experiment is carried out, the operator adjusts the adjusting rod (34) by rotating, the adjusting rod (34) is connected with the connecting plate (32) by screwing and is synchronized to move downward in the process of rotating, so that the mounting plate (33) and the motor (31) are driven to move downward by the adjusting rod (34), the mounting plate (33) is placed on the upper surface of the support base (11), at this time the positioning rod (46) on the surface of the support base (11) is clamped into the positioning hole (45), the positioning rod (46) is limited and supported by cooperating with the positioning hole (45), and meanwhile the adjusting rod (34) is out of contact with the connecting plate (32) through the through slot (35) on the surface of the adjusting rod (34), at this time the vibration of the motor (31) itself is only transmitted to the support base (11), and the damping pad (28) can buffer and absorb the vibration between the support base (11) and the supporting plate (29), so that the vibration frequency of the detection device is different from that of the power source.

2. The device for detecting nonlinear vibrations of a high-speed rotating viscoelastic plate according to claim 1, characterized in that The upper side of the supporting plate (29) is provided with a test assembly one, the test assembly one comprises a fixed sleeve (30) fixedly connected with the outer surface of the upper end of the supporting plate (29), the outer surface of the upper end of the fixed sleeve (30) is fixedly connected with a fixed cylinder (15), the elastic plate (19) is located in the fixed cylinder (15), the inner surface of the fixed cylinder (15) is fixedly connected with a mounting frame (47) at the lower end, and the mounting frame (47) is annular.

3. The device for detecting nonlinear vibrations of a high-speed rotating viscoelastic plate according to claim 2, characterized in that: The outer surface of the mounting frame (47) is fixedly connected with a laser sensor (48), the outer surface of the fixed sleeve (30) is provided with a grid (20), the outer surface of the upper end of the supporting plate (29) is fixedly connected with a test box (12) outside the fixed sleeve (30), the inner surface of the test box (12) is fixedly connected with an induction plate (14), the number of the induction plate (14), the grid (20) and the laser sensor (48) is several groups and is annularly arranged.

4. The device for detecting nonlinear vibrations of a high-speed rotating viscoelastic plate according to claim 3, characterized in that: The lower side of the elastic plate (19) is provided with a test assembly two, the test assembly two comprises a guide groove (38) formed in the outer surface of the lower end of the fixed cylinder (15), the inner surface of the guide groove (38) is slidably connected with a guide rod (39), the outer surface of the upper end of the guide rod (39) is fixedly connected with a vibration sensor (40), the number of the guide groove (38), the guide rod (39) and the vibration sensor (40) is several groups and is annularly arranged, and the vibration sensor (40) is located at the lower side of the elastic plate (19).

5. The apparatus for detecting nonlinear vibrations of a high-speed rotating viscoelastic plate according to claim 4, wherein: The lower side of the fixed cylinder (15) is provided with an adjusting assembly, the adjusting assembly comprises a check ring (36) fixedly connected with the outer surface of the fixed sleeve (30), the outer surface of the check ring (36) is dampingly and rotatably connected with a supporting plate (37), the supporting plate (37) is annular, the outer surface of the upper end of the supporting plate (37) is provided with a limiting groove (44), the limiting groove (44) is arc-shaped, the lower end of the outer surface of the lower end of the fixed cylinder (15) is fixedly connected with a movable rod (43), and the lower end of the movable rod (43) is located in the limiting groove (44).

6. The apparatus for detecting nonlinear vibrations of a high-speed rotating viscoelastic plate according to claim 5, wherein: The outer surface of the guide rod (39) is rotationally connected with a swing rod (41), one end of the swing rod (41) away from the guide rod (39) is rotationally connected with a jacking rod (42), the lower end of the jacking rod (42) is fixedly connected with the outer surface of the upper end of the supporting plate (37), the number of the swing rod (41) and the jacking rod (42) is several groups and is correspondingly distributed with the guide rod (39), the outer surface of the test box (12) is provided with an operation port (13), the number of the operation port (13) is several groups and is symmetrically distributed.

7. The apparatus for non-linear vibration detection of a high-speed rotating viscoelastic plate according to claim 6, characterized in that: The upper end of the test box (12) is open, the stop ring (36) is annular, the upper end of the fixed cylinder (15) is clampedly connected with a cover plate (16), the lower end of the locking sleeve (18) and the top pipe (25) are circular arc-shaped, the inductive plate (14) and the grating (20) are linearly distributed with the laser sensor (48).

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