A mass damper detection device

Abstract

The application discloses a mass damper detection device and relates to the technical field of detection devices, which comprises a steel plate base, a guide rail is arranged at the top end of the steel plate base, a sliding block fixing seat is slidably connected to the top end of the guide rail, a stand is arranged at the top end of the steel plate base, a motor is connected to the top end of the stand, a transmission shaft is sleeved with the output end of the motor, a cam is arranged outside the transmission shaft, a transmission mechanism is arranged outside the transmission shaft, and the transmission mechanism comprises a gear, a limiting sleeve and an extension spring. The mass damper to be detected is placed in the clamping device, and the electromagnet absorbs and fixes the mass damper after being electrified; the impact hammer falls under the driving of the toothed plate to generate impact load; the impact force is calculated through the encoder; the laser ranging sensor monitors displacement; and the measurement reference is unified, so that the structure realizes the coordinated loading of multiple actuators, has high synchronism, does not need manual operation and guarantees the accuracy of analysis.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, specifically to a mass damper detection device. Background Technology

[0002] Mass damper testing devices are specialized equipment used to evaluate and verify the performance of mass dampers. Mass dampers, as important vibration control devices, are widely used in construction, bridges, machinery, and other fields. Their main function is to counteract the vibration energy of structures or equipment through the inertial effect of the added mass system, thereby reducing resonance amplitude and improving system stability and safety. The core function of the testing device is to simulate actual working conditions and quantitatively analyze the dynamic response, energy dissipation characteristics, and durability of the damper, ensuring that its design parameters match actual performance. This device typically consists of an excitation system, a sensor array, and a data acquisition and analysis module. It can accurately measure key parameters of the damper such as displacement, velocity, and force, and plot characteristic graphs such as hysteresis curves and frequency response. Through a high-precision testing environment, the testing device can also evaluate the performance changes of the damper under different temperatures, loads, and cycles, providing a scientific basis for product optimization and quality control. In the field of seismic engineering, such testing devices are particularly crucial because they directly relate to whether the damper can effectively absorb seismic energy and ensure structural safety. Furthermore, with the advancement of vibration reduction technology, the functions of the testing device are constantly expanding.

[0003] Most existing mass damper detection devices have the following drawbacks: First, the loading direction is unidirectional, making it difficult to simulate multi-directional coupled forces in actual working conditions; if multiple actuators are used for coordinated loading, the control becomes complex, synchronization is poor, and errors are easily introduced; in addition, the independent deployment of sensors leads to a bloated system, measurement point deviations, and inconsistent data timing, affecting the accuracy of analysis; the realization of impact loads largely depends on manual operation, posing safety risks and having low repeatability. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a mass damper detection device to solve the technical problems of: difficulty in simulating actual multi-directional coupled forces due to a single loading direction; complex control and poor synchronization due to multi-actuator coordination, which easily introduces errors; bloated system due to independent sensor deployment, measurement point deviation and inconsistent data timing; and low repeatability and safety hazards due to reliance on manual operation for impact loads.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mass damper detection device, comprising a steel plate base, a guide rail at the top of the steel plate base, a slider fixing seat slidably connected to the top of the guide rail, a column at the top of the steel plate base, a motor connected to the top of the column, a transmission shaft sleeved at the output end of the motor, a cam on the outside of the transmission shaft, and a transmission mechanism on the outside of the transmission shaft. The transmission mechanism includes a gear, a limiting sleeve, and a telescopic spring. The gear is located on the outside of the transmission shaft, the limiting sleeve is located on the outside of the gear, and the telescopic spring is located on the outside of the transmission shaft. Two sets of brackets are provided at the top of the steel plate base. A toothed plate is movably connected inside the brackets, and the toothed plate is connected to the teeth of the gear. A locking plate is provided inside the toothed plate, and a push block is provided at the bottom end of the toothed plate.

[0006] By adopting the above technical solution, when the motor starts, it will drive the transmission shaft connected to its output end to rotate synchronously. When the transmission shaft rotates synchronously, it will cause the cam set inside to rotate. When the cam rotates, due to the characteristics of the cam, the moving block connected inside will move vertically in a reciprocating manner according to the rotation of the cam. Furthermore, a rocking block is set at the bottom of the moving block to impact the steel plate base to a certain extent. During the impact, the spring inside the moving block will ensure that it will not rigidly break during the impact, thus preventing damage.

[0007] Furthermore, the cam is provided with a rocking structure, which includes a moving block, a connecting rod, a connecting block and a spring. The moving block is located at the bottom end of the cam, the connecting rod is located outside the moving block, the connecting block is located at the tail end of the slider fixing seat, and the spring is located inside the moving block.

[0008] By adopting the above technical solution, the reciprocating motion of the block is transmitted to the slider located at the top of the guide rail through two sets of connecting rods on the outside of the moving block. The slider then drives the damper at its top to move rapidly in a lateral reciprocating motion, thereby achieving the effect of lateral reciprocating swaying. The inherent synchronicity of the loads in the two directions is ensured through mechanical symmetrical force decomposition, reducing the dependence on complex control systems and reducing the risk of asynchrony caused by control delays or errors.

[0009] Furthermore, a clamping device is provided at the top of the slider fixing seat, a laser rangefinder is provided at one end of the slider fixing seat, an impact hammer is connected to the bottom end of the toothed plate, and a mounting bracket for fixing to the motor is provided at the top of the column.

[0010] By adopting the above technical solution, when the drive shaft is transmitting power, the rotational force can be transmitted to the gear plate through the teeth of the gear on its outer side. This causes the gear plate to move upward along the bracket. During the upward movement of the gear plate, because a limit plate is set on one side of the gear plate, the gear can maintain meshing with the gear plate during transmission. When the gear plate moves upward as a whole, the push block set at its bottom end will push the limit sleeve set on the outer side of the gear. This limit sleeve will cause the gear to move along the drive shaft to the motor side. Because the limit plates at the upper and lower ends of the gear plate are too short, the upper and lower ends of the gear plate have a certain opening. This allows the gear plate to work with the push block to push the gear outward. As a result, the teeth of the gear and the teeth of the gear plate no longer mesh. This causes the gear plate to drive the impact hammer set at its bottom end to impact downward. This achieves precise control of the release timing and angle, realizes the repeatable and highly consistent application of impact load, and eliminates the uncertainty of human operation.

[0011] Furthermore, an encoder is provided at the bottom of the bracket, and a limiting plate is connected to one side of the top of the impact hammer to cooperate with the bracket at the end away from the toothed plate, and the limiting plate cooperates with the encoder. A fixing ring that cooperates with the telescopic spring is provided on the outside of the transmission shaft, and a protrusion corresponding to the limiting sleeve is provided on the outside of the transmission shaft.

[0012] By adopting the above technical solution, when subsequent resetting is required, the toothed plate will return to its original position, exposing the opening at its top that is not closed by the limiting plate. Through the limiting sleeve, the telescopic spring set at one end is in a stored state when the gear is pushed out. When the gear is at the top of the toothed plate, the elasticity of the telescopic spring will cause the teeth to re-insert into the toothed plate, thus meshing with the teeth of the toothed plate. The encoder calculates the moving speed of the impact hammer to calculate the impact force, and the laser range sensor measures the lateral distance of the slider fixing seat, ensuring the consistency of the measurement benchmarks for displacement, pressure, etc. with the force point, reducing errors from the source.

[0013] Furthermore, a wobbling block is provided at the top of the moving block, two sets of anti-slip pads are provided at the top of the steel plate base, a protective shell is provided at the top, and an operating cavity is provided inside the protective shell.

[0014] By adopting the above technical solution, the mass damper to be tested is placed inside the clamping device by the staff, and the arc-shaped limiting shell set at the top of the clamping device ensures accurate alignment after installation. When testing is required, the staff can start the motor at the top of the column through an external control device. At the same time, when the whole device is powered on, the electromagnet inside the clamping device will also be energized, so that the electromagnet itself generates a strong attraction force to attract and fix the mass damper inside the clamping device through magnetic force.

[0015] In summary, the present invention has the following advantages: By placing the damper to be measured into the clamping device, and then energizing it with an electromagnet, the present invention starts the motor to drive the transmission shaft to rotate, the cam pushes the moving block to make vertical reciprocating motion, and the connecting rod drives the slider to achieve lateral swaying, simulating multi-directional coupled force. The gear drives the toothed plate to rise, the push block pushes the limit sleeve to disengage the gear, and the toothed plate drives the impact hammer to fall to generate impact load. The encoder calculates the impact force, and the laser range sensor monitors the displacement to ensure a unified measurement benchmark. This structure realizes the coordinated loading of multiple actuators, has high synchronization, requires no manual operation, and ensures the accuracy of the analysis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a partial structural diagram of the present invention;

[0021] Figure 6 For the present invention Figure 5 Enlarged view of point B;

[0022] Figure 7 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 8 For the present invention Figure 7 Enlarged view of point C;

[0024] Figure 9 This is a schematic diagram of the linkage structure of the present invention;

[0025] Figure 10 For the present invention Figure 9Enlarged view of point D.

[0026] In the diagram: 1. Steel plate base; 2. Operating cavity; 3. Anti-slip pad; 4. Guide rail; 5. Slider fixing seat; 6. Clamping device; 7. Protective shell; 8. Bracket; 9. Motor; 10. Column; 11. Cam; 12. Transmission mechanism; 1201. Gear; 1202. Limiting sleeve; 1203. Telescopic spring; 13. Impact hammer; 14. Shaking structure; 1401. Moving block; 1402. Connecting rod; 1403. Connecting block; 1404. Spring; 15. Laser rangefinder sensor; 16. Tooth plate; 17. Drive shaft; 18. Clamping plate; 19. Push block; 20. Encoder; 21. Limiting plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] A mass damper detection device, such as Figures 1-10 As shown, the system includes a steel plate base 1, a guide rail 4 at the top of the steel plate base 1, a slider fixing seat 5 slidably connected to the top of the guide rail 4, a column 10 at the top of the steel plate base 1, a motor 9 connected to the top of the column 10, a drive shaft 17 sleeved at the output end of the motor 9, a cam 11 on the outside of the drive shaft 17, and a transmission mechanism 12 on the outside of the drive shaft 17. The transmission mechanism 12 includes a gear 1201, a limiting sleeve 1202, and a telescopic spring 1203. The gear 1201 is located on the outside of the drive shaft 17, the limiting sleeve 1202 is located on the outside of the gear 1201, and the telescopic spring 1203 is located on the outside of the drive shaft 17. Two sets of brackets 8 are located at the top of the steel plate base 1, and a toothed plate 16 is movably connected inside the brackets 8. The toothed plate 16 and the gear 1201 are connected to each other. The toothed plate 16 is connected by teeth. A locking plate 18 is provided inside the toothed plate 16, and a push block 19 is provided at the bottom end of the toothed plate 16. When the motor 9 starts, it will drive the transmission shaft 17 connected to its output end to rotate synchronously. When the transmission shaft 17 rotates synchronously, the cam 11 provided inside it will rotate. When the cam 11 rotates, due to the characteristics of the cam 11, the moving block 1401 connected inside it will move vertically in a reciprocating manner according to the rotation of the cam 11. The bottom end of the moving block 1401 is also provided with a rocking block that can impact the steel plate base 1 to a certain extent. During the impact, the spring 1404 inside the moving block 1401 will ensure that it will not break rigidly during the impact, thus preventing damage.

[0030] For example, the cam 11 is provided with a rocking structure 14. The rocking structure 14 includes a moving block 1401, a connecting rod 1402, a connecting block 1403, and a spring 1404. The moving block 1401 is located at the bottom of the cam 11, the connecting rod 1402 is located outside the moving block 1401, the connecting block 1403 is located at the tail end of the slider fixing seat 5, and the spring 1404 is located inside the moving block 1401. The operator places the mass damper to be tested inside the clamping device 6, and the arc-shaped limiting shell at the top of the clamping device 6 ensures accurate alignment after installation. When testing is required, the operator can start the motor 9 at the top of the column 10 through an external control device. At the same time, when the whole device is powered on, the electromagnet inside the clamping device 6 is also powered on, so that the electromagnet itself generates a strong attraction force to attract and fix the mass damper inside the clamping device 6 through magnetic force.

[0031] For example, a clamping device 6 is provided at the top of the slider fixing seat 5, a laser range sensor 15 is provided at one end of the slider fixing seat 5, an impact hammer 13 is connected to the bottom end of the toothed plate 16, and a mounting bracket fixed to the motor 9 is provided at the top of the column 10. The reciprocating motion of the slider is transmitted to the slider located at the top of the guide rail 4 by the two sets of connecting rods 1402 on the outside of the moving block 1401. This causes the slider to drive the damper at its top to move rapidly in a lateral reciprocating motion, thereby achieving the effect of lateral reciprocating swaying. The inherent synchronicity of the loads in the two directions is ensured by the mechanical symmetrical force decomposition, reducing the dependence on the complex control system and reducing the risk of asynchrony caused by control delay or error.

[0032] For example, an encoder 20 is provided at the bottom of the bracket 8, and a limiting plate 21 is connected to one side of the top of the impact hammer 13, which cooperates with the bracket 8 at the end away from the toothed plate 16. The limiting plate 21 cooperates with the encoder 20. A fixing ring that cooperates with the telescopic spring 1203 is provided on the outside of the transmission shaft 17, and a protrusion corresponding to the limiting sleeve 1202 is provided on the outside of the transmission shaft 17. When the transmission shaft 17 is in motion, the rotational force can be transmitted to the toothed plate 16 through the teeth of the gear 1201 on its outside, thereby driving the toothed plate 16 to move upward along the bracket 8. During the upward movement of the toothed plate 16, because the limiting plate 21 is provided on one side of the toothed plate 16, the gear 1201 can maintain a meshing state with the toothed plate 16 during the transmission process. The toothed plate 16 moves upward, causing the pusher block 19 at its bottom to push the limiting sleeve 1202 on the outside of the gear 1201. The limiting sleeve 1202 drives the gear 1201 to move along the transmission shaft 17 toward the motor 9. Because the limiting plates 21 at the upper and lower ends of the toothed plate 16 are too short, the upper and lower ends of the toothed plate 16 have a certain opening. Therefore, the toothed plate 16 can work with the pusher block 19 to push the gear 1201 outward. As a result, the teeth of the gear 1201 no longer mesh with the teeth of the toothed plate 16. This causes the toothed plate 16 to drive the impact hammer 13 at its bottom to impact downward. This achieves precise control of the release timing and angle, realizes the repeatable and highly consistent application of impact load, and eliminates the uncertainty of human operation.

[0033] For example, the top of the moving block 1401 is provided with a wobbling block, the top of the steel plate base 1 is provided with two sets of anti-slip pads 3, and the top is provided with a protective shell 7. The protective shell 7 is provided with an operating cavity 2. When subsequent reset is required, the toothed plate will return to its original position, exposing the opening position at its top that is not closed by the limiting plate 21. Through the limiting sleeve 1202, the telescopic spring 1203 provided at one end is in a stored state when the gear 1201 is pushed out. When the gear 1201 is at the top of the toothed plate 16, the elasticity of the telescopic spring 1203 will cause the teeth to re-insert into the toothed plate, thereby meshing with the teeth of the toothed plate 16. The moving speed of the impact hammer 13 is calculated by the encoder 20 to calculate the impact force. The lateral distance of the slider fixing seat 5 is measured by the laser range sensor 15, ensuring the consistency of the measurement benchmarks for displacement, pressure, etc. with the force point, reducing errors from the source.

[0034] The working principle of this invention is as follows: When in use, the operator places the mass damper to be tested inside the clamping device 6, and the arc-shaped limiting shell at the top of the clamping device 6 ensures accurate alignment after installation. When testing is required, the operator can start the motor 9 at the top of the column 10 through an external control device. At the same time, when the whole device is powered on, the electromagnet inside the clamping device 6 will also be powered on, thereby causing the electromagnet itself to generate a strong attraction force to attract and fix the mass damper inside the clamping device 6 through magnetic force.

[0035] At this time, when the motor 9 starts, it will drive the transmission shaft 17 connected to its output end to rotate synchronously. When the transmission shaft 17 rotates synchronously, the cam 11 set inside it will rotate. When the cam 11 rotates, due to the characteristics of the cam 11, the moving block 1401 connected inside it will move vertically in a reciprocating manner according to the rotation of the cam 11. The bottom end of the moving block 1401 is also equipped with a rocking block that can impact the steel plate base 1 to a certain extent. During the impact, the spring 1404 inside the moving block 1401 will ensure that it will not break rigidly during the impact, thus preventing damage.

[0036] The reciprocating motion of the slider is transmitted to the slider located at the top of the guide rail 4 via two sets of connecting rods 1402 on the outside of the moving block 1401. This causes the slider to drive the damper at its top to move rapidly in a lateral reciprocating motion, thereby achieving the effect of lateral reciprocating swaying. The inherent synchronicity of the loads in the two directions is ensured through mechanical symmetrical force decomposition, reducing the dependence on complex control systems and reducing the risk of asynchrony caused by control delays or errors.

[0037] While the drive shaft 17 is transmitting power, the rotational force is transmitted to the gear plate 16 via the teeth of the gear 1201 on its outer side. This causes the gear plate 16 to move upward along the bracket 8. During the upward movement of the gear plate 16, the gear 1201 remains engaged with the gear plate 16 because a limit plate 21 is provided on one side of the gear plate 16. As the gear plate 16 moves upward as a whole, the push block 19 at its bottom end pushes the limit sleeve 1202 on the outer side of the gear 1201, causing the limit sleeve 1202 to move upward. Gear 1201 moves along the transmission shaft 17 toward the motor 9. Because the distance between the limiting plates 21 at the upper and lower ends of the tooth plate 16 is too short, the upper and lower ends of the tooth plate 16 have a certain opening. Therefore, the tooth plate 16 can drive the push block 19 to push the gear 1201 outward. As a result, the teeth of the gear 1201 no longer mesh with the teeth of the tooth plate 16. This causes the tooth plate 16 to drive the impact hammer 13 set at its bottom end to impact downward. This achieves the effect of accurately controlling the timing and angle of release, realizing the repeatable and highly consistent application of impact load, and eliminating the uncertainty of human operation.

[0038] Specifically, when a reset is required, the toothed plate will return to its original position, exposing the opening at its top that is not closed by the limiting plate 21. Through the limiting sleeve 1202, the telescopic spring 1203 at one end will be in a stored state when the gear 1201 is pushed out. When the gear 1201 is at the top of the toothed plate 16, the elasticity of the telescopic spring 1203 will cause the teeth to re-insert into the toothed plate, thus meshing with the teeth of the toothed plate 16. The encoder 20 calculates the moving speed of the impact hammer 13 to calculate the impact force, and the laser range sensor 15 measures the lateral distance of the slider fixing seat 5, ensuring the consistency of the measurement benchmarks for displacement, pressure, etc. with the force point, reducing errors from the source.

[0039] The above structure achieves multiple loading directions, simulating multi-directional coupled forces in actual working conditions; and the use of multiple actuators for coordinated loading ensures high synchronization, reduces the likelihood of introducing errors, guarantees the accuracy of analysis, and eliminates the need for manual operation in the implementation of impact loads.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A mass damper detection device comprising a steel plate base (1), characterized in that: The steel plate base (1) top is provided with guide rail (4), the guide rail (4) top slidingly connected with slider fixed seat (5), the steel plate base (1) top is provided with stand (10), the stand (10) top is connected with motor (9), the motor (9) output sleeve is connected with transmission shaft (17), the transmission shaft (17) outside is provided with cam (11), the transmission shaft (17) outside is provided with transmission mechanism (12), the transmission mechanism (12) includes gear (1201), limit sleeve (1202) and telescopic spring (1203), the gear (1201) is provided on the outside of transmission shaft (17), the limit sleeve (1202) is provided on the outside of gear (1201), the telescopic spring (1203) is provided on the outside of transmission shaft (17), the steel plate base (1) top is provided with two groups of support (8), the support (8) inside movably connected with toothed plate (16), and toothed plate (16) is connected with gear (1201) tooth, the toothed plate (16) inside is provided with clamping plate (18), the toothed plate (16) bottom is provided with push block (19), the cam (11) inside is provided with wobble structure (14), the wobble structure (14) includes moving block (1401), connecting rod (1402), connecting block (1403) and spring (1404), the moving block (1401) is provided at the bottom of cam (11), the connecting rod (1402) is provided on the outside of moving block (1401), the connecting block (1403) is provided at the tail end of slider fixed seat (5), the spring (1404) is provided in moving block (1401), the toothed plate (16) bottom is connected with impact hammer (13), the stand (10) top is provided with the mounting bracket fixed with motor (9), the transmission shaft (17) outside is provided with the fixed ring matched with telescopic spring (1203), the transmission shaft (17) outside is provided with the protrusion corresponding to limit sleeve (1202), the slider fixed seat (5) one end is provided with laser ranging sensor (15), the support (8) bottom is provided with encoder (20).

2. A mass damper detection device according to claim 1, characterized in that: The slider fixed seat (5) top is provided with clamping device (6).

3. A mass damper detection device according to claim 1, characterized in that: The impact hammer (13) top side is connected with the limit plate (21) matched with the support (8) away from the one end of toothed plate (16), and the limit plate (21) is matched with the encoder (20).

4. A mass damper detection device according to claim 2, characterized in that: The moving block (1401) top is provided with wobble block, the steel plate base (1) top is provided with two groups of antiskid support pad (3).

5. A mass damper detection device according to claim 1, characterized in that: The top is provided with protective shell (7), the protective shell (7) inside is provided with operation cavity (2). The top is provided with protective shell (7), the protective shell (7) inside is provided with operation cavity (2).

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