A vibration measuring device

Abstract

The utility model relates to vibration measurement technical field especially, and it is a kind of vibration measuring device.Its technical scheme includes base and computing host, the base upper portion is provided with measuring plate, and the measuring plate front surface and rear surface are all fixedly installed with clamp, the base upper surface one side is fixedly installed with overhanging frame and computing host, the overhanging frame upper surface is fixedly installed with projection equipment, the overhanging frame lower surface is located the position above the center of measuring plate and is rotatably installed with L type swing arm by vertical damping pivot, the L type swing arm terminal is rotatably connected with first connecting rod by horizontal damping pivot, and the first connecting rod terminal is rotatably connected with second connecting rod by horizontal damping pivot.The utility model can be positioned by the vibration sensor positioning structure with multiple degrees of freedom adjustable and visual projection function, realizes the flexible measurement of different types of measured piece and the multiple synchronous observation of experimental data, and it is easy to operate, measurement is stable, and adapts physical teaching.

Description

Technical Field

[0001] This utility model relates to the field of vibration measurement technology, specifically a vibration measurement device. Background Technology

[0002] In physics teaching, vibration measurement is a core teaching content that connects theoretical knowledge with practical applications. Through specialized instruments, it accurately collects key physical parameters such as displacement, velocity, acceleration, frequency, and phase of objects during vibration, and intuitively presents the characteristic laws of typical vibration phenomena such as simple harmonic motion, forced vibration, and resonance. In teaching, vibration measurement not only provides quantifiable experimental verification for basic physical principles such as Newton's laws of motion, conservation of mechanical energy, and wave propagation, helping students establish a concrete understanding that "vibration is the basic form of motion of matter," but also cultivates students' core abilities in experimental design, data processing, and error analysis by building measurement scenarios from basic models such as simple pendulums and spring oscillators to complex systems such as string vibration and mechanical wave propagation. This lays an experimental foundation for subsequent advanced learning and applications such as engineering vibration control, acoustic principles, and precision instrument design.

[0003] Existing vibration measurement devices used in physics teaching have relatively rigid sensor positioning methods, mostly fixed installations or only unidirectional fine adjustment, which cannot adapt to different types of objects and multi-point measurements. The measurement adaptability is poor, and the measurement data is inconvenient to display, making it difficult for students to observe clearly and resulting in insufficient teaching interactivity. Therefore, we propose a vibration measurement device. Utility Model Content

[0004] The purpose of this invention is to provide a vibration measurement device that features a multi-degree-of-freedom adjustable vibration sensor positioning structure and a visualization projection function. This enables flexible measurement of different types of test objects and simultaneous observation of experimental data by multiple people. It is also easy to operate, provides stable measurement, and is well-suited for physics teaching. This invention addresses the problems of existing vibration measurement devices used in physics teaching, which suffer from rigid sensor positioning methods, often fixed installations or only unidirectional fine-tuning, making them unsuitable for measuring different types of objects and multiple points. Furthermore, these devices have poor measurement adaptability, inconvenient data display, and insufficient student interaction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration measuring device, comprising a base and a computing host, wherein a measuring plate is disposed above the base, and clamps are fixedly installed on both the front and rear surfaces of the measuring plate; a suspension frame and a computing host are fixedly installed on one side of the upper surface of the base; a projection device is fixedly installed on the upper surface of the suspension frame; an L-shaped rotating arm is rotatably mounted on the lower surface of the suspension frame above the center of the measuring plate via a vertical damping shaft; a first connecting rod is rotatably connected to the end of the L-shaped rotating arm via a horizontal damping shaft; a second connecting rod is rotatably connected to the end of the first connecting rod via a horizontal damping shaft; and a vibration sensor is rotatably connected to the end of the second connecting rod via a horizontal damping shaft.

[0006] Preferably, anti-slip blocks are fixedly installed on the lower surface of the base near the four corners.

[0007] Preferably, a plurality of damping shock absorbers are arranged in a circular array at equal intervals below the measuring plate, and both ends of each damping shock absorber are rotatably connected to the lower surface of the measuring plate and the upper surface of the base through universal ball bearings.

[0008] Preferably, a groove is provided at the center of the upper surface of the measuring plate, and a vibrator is fixedly installed inside the groove.

[0009] Preferably, the clamp includes a fixing plate fixedly mounted on the measuring plate. The front surface of the fixing plate is provided with threaded holes. A lead screw is movably inserted into the threaded holes. The end of the lead screw located above the measuring plate is rotatably connected to a clamping plate through a bearing. A handwheel is fixedly connected to the end of the lead screw.

[0010] Preferably, an anti-slip pad is fixedly installed on the outer surface of the clamping plate.

[0011] Preferably, a touch screen is fixedly mounted on the upper surface of the computing host.

[0012] Preferably, a camera is fixedly mounted on the lower surface of the L-shaped rotating arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a base, measuring plate, clamps, suspension frame, projection equipment, computer, L-shaped rotating arm, first connecting rod, second connecting rod, vertical damping rotating shaft, horizontal damping rotating shaft, and vibration sensor, achieves the ability to position the vibration sensor with a multi-degree-of-freedom adjustable structure and visualize the projection function. This enables flexible measurement of different types of test objects and simultaneous observation of experimental data by multiple people. It is easy to operate, provides stable measurement, and is suitable for physics teaching. The vibrating object to be measured is placed in the center area of ​​the upper surface of the measuring plate, and clamped and fixed by adjusting the clamps on both sides to ensure that it does not slip off the measuring plate during vibration. Then, by rotating the L-shaped rotating arm (around the vertical damping rotating shaft), swinging the first connecting rod, and the second connecting rod, the vibration sensor achieves the desired effect. The two linkages (around each horizontal damping axis) drive the vibration sensor to move, ensuring that the elastic detection end of the vibration sensor is in close contact with the target measurement point of the object under test. Each damping axis remains fixed in its current position without external force, preventing sensor displacement during measurement. The acceleration, displacement, or frequency signals generated by the vibration of the object under test are collected by the vibration sensor in real time and transmitted to the computer host via a data transmission line. The computer host's built-in data processing module converts the raw signals into visual data such as vibration waveforms, frequency values, and amplitude. This data is then projected onto the classroom projection screen or blank wall via a control device, enabling multiple people to observe simultaneously and facilitating teachers' explanation of vibration principles and experimental data patterns.

[0014] 2. By setting up a damping shock absorber, this utility model can adaptively adjust the slight posture of the measuring plate, effectively isolate external vibrations and suppress base resonance, ensuring the stability of the measurement benchmark and the vibration characteristics of the test piece are not disturbed, thus improving the accuracy of the measurement data.

[0015] 3. By setting up a camera, this practical tool can capture the vibration process of the object under test in real time and project it synchronously, realizing the visual linkage display of vibration phenomena and data, helping students to intuitively understand vibration characteristics and improving the teaching demonstration effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the measuring plate of this utility model; Figure 3 This is a partial three-dimensional structural diagram of the clamp of this utility model; Figure 4 This is a partial three-dimensional structural diagram of the L-shaped rotating arm of this utility model.

[0017] Reference numerals: 1. Base; 2. Anti-slip block; 3. Measuring plate; 4. Suspension frame; 5. Projection equipment; 6. L-shaped rotating arm; 7. Touch screen; 8. Computer host; 9. Damping shock absorber rod; 10. Groove; 11. Vibrator; 12. Clamp; 13. Clamping plate; 14. Fixing plate; 15. Handwheel; 16. Threaded hole; 17. Lead screw; 18. Anti-slip pad; 19. Vertical damping shaft; 20. Horizontal damping shaft; 21. First connecting rod; 22. Second connecting rod; 23. Vibration sensor; 24. Camera. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 like Figures 1-4 As shown, the vibration measuring device proposed in this utility model includes a base 1 and a computer host 8. Anti-slip blocks 2 are fixedly installed on the lower surface of the base 1 near the four corners. The anti-slip blocks 2 play a role in preventing slippage and supporting the base 1 placed on the podium. A measuring plate 3 is set on the top of the base 1, and clamps 12 are fixedly installed on the front and rear surfaces of the measuring plate 3. The clamps 12 include fixed plates 14 fixedly installed on the measuring plate 3. The front surface of the fixed plates 14 is provided with threaded holes 16. A lead screw 17 is movably inserted into the threaded holes 16. The end of the lead screw 17 located above the measuring plate 3 is rotatably connected to a clamping plate 13 through a bearing. A handwheel 15 is fixedly connected to the end of the lead screw 17. By rotating the lead screw 17 through the handwheel 15, the clamping plate 13 is moved, and the measuring object on the measuring plate 3 is clamped by the two clamping plates 13. An anti-slip pad 18 is fixedly installed on the outer surface of the clamping plate 13. The anti-slip pad 18 plays a role in preventing slippage of the clamped measuring object.

[0020] Several damping rods 9 are arranged in a circular array at equal intervals below the measuring plate 3. The two ends of each damping rod 9 are rotatably connected to the lower surface of the measuring plate 3 and the upper surface of the base 1 through universal ball bearings. This allows for adaptive adjustment of the measuring plate 3's slight posture, efficient isolation of external vibrations, and suppression of resonance of the base 1, ensuring the stability of the measurement reference and preventing interference with the vibration characteristics of the test piece, thereby improving the accuracy of the measurement data. A suspension frame 4 and a computing host 8 are fixedly installed on one side of the upper surface of the base 1. The suspension frame 4 is shaped like an inverted "L" from the front view. A projection device 5 is fixedly installed on the upper surface of the suspension frame 4. The projection device 5 includes a projection bracket and a projector, and the projector is fixed to the upper surface of the suspension frame 4 through the projection bracket.

[0021] An L-shaped rotating arm 6 is rotatably mounted on the lower surface of the suspension frame 4 above the center of the measuring plate 3 via a vertical damping shaft 19. The end of the L-shaped rotating arm 6 is rotatably connected to a first connecting rod 21 via a horizontal damping shaft 20. The end of the first connecting rod 21 is rotatably connected to a second connecting rod 22 via a horizontal damping shaft 20. The end of the second connecting rod 22 is rotatably connected to a vibration sensor 23 via a horizontal damping shaft 20. The vibration sensor 23 is a contact type vibration sensor (such as a piezoelectric accelerometer or a capacitive displacement sensor), and its detection end is equipped with an elastic contact head to avoid interference with the vibration characteristics of the vibrating component under test.

[0022] A touch screen 7 is fixedly mounted on the upper surface of the computing host 8. Both the touch screen 7 and the vibration sensor 23 are electrically connected to the computing host 8. The computing host 8 can receive the vibration signal from the vibration sensor 23 in real time and complete signal analysis, data conversion and device linkage control through the built-in module. The touch screen 7 supports the teacher's touch operation of the device to start and stop, parameter setting, data storage and other functions, and displays measurement data, vibration waveform and real-time image in real time. A groove 10 is provided at the center of the upper surface of the measuring plate 3, and a vibrator 11 is fixedly installed inside the groove 10. The vibrator 11 is electrically connected to the computing host 8 and can set parameters such as vibration frequency and amplitude through the touch screen 7. It can serve as a standard vibration source to provide a controllable vibration scenario for physics teaching, and can also excite the vibrating component under test to assist in the measurement of vibration characteristics.

[0023] In use, the vibrating object to be tested is placed in the center area of ​​the upper surface of the measuring plate 3. The clamps 12 on the front and rear sides are adjusted to hold and fix the object, ensuring that it does not slip off the measuring plate 3 during vibration. Then, by rotating the L-shaped rotating arm 6 (around the vertical damping axis 19) and swinging the first connecting rod 21 and the second connecting rod 22 (around each horizontal damping axis 20), the vibration sensor 23 is moved, so that the elastic detection end of the vibration sensor 23 is in close contact with the target measurement point of the object to be tested. Each damping axis remains fixed in its current position without external force, preventing the vibration sensor 23 from shifting during the measurement. The acceleration, displacement, or frequency signals generated by the vibration of the object to be tested are collected by the vibration sensor 23 in real time and transmitted to the computer host 8 through the data transmission line. The data processing module built into the computer host 8 converts the original signal into visual data such as vibration waveform, frequency value, and amplitude. Then, by controlling the projection device 5, these data are projected onto the projection screen or blank wall in the classroom, enabling multiple people to observe simultaneously and facilitating the teacher's explanation of the vibration principle and experimental data patterns.

[0024] Example 2 like Figure 1 and Figure 4As shown, the vibration measuring device proposed in this utility model, compared with the first embodiment, further includes a camera 24 fixedly installed on the lower surface of the L-shaped rotating arm 6, and the camera 24 is located above the center of the measuring plate 3. The camera 24 is electrically connected to the computing host 8.

[0025] In this embodiment, the vibration process of the object under test on the measuring board 3 can be captured in real time by the camera 24 and projected synchronously by the projection device 5 to realize the visual linkage display of vibration phenomena and data, which helps students intuitively understand vibration characteristics and improves the teaching demonstration effect.

[0026] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A vibration measuring device, comprising a base (1) and a computing host (8), characterized in that: A measuring plate (3) is provided above the base (1), and clamps (12) are fixedly installed on the front and rear surfaces of the measuring plate (3). A suspension frame (4) and a computer host (8) are fixedly installed on one side of the upper surface of the base (1). A projection device (5) is fixedly installed on the upper surface of the suspension frame (4). An L-shaped rotating arm (6) is rotatably installed on the lower surface of the suspension frame (4) above the center of the measuring plate (3) via a vertical damping rotating shaft (19). The end of the L-shaped rotating arm (6) is rotatably connected to a first connecting rod (21) via a horizontal damping rotating shaft (20). The end of the first connecting rod (21) is rotatably connected to a second connecting rod (22) via a horizontal damping rotating shaft (20). The end of the second connecting rod (22) is rotatably connected to a vibration sensor (23) via a horizontal damping rotating shaft (20).

2. The vibration measuring device according to claim 1, characterized in that: Anti-slip blocks (2) are fixedly installed on the lower surface of the base (1) near the four corners.

3. The vibration measuring device according to claim 1, characterized in that: The measuring plate (3) is provided with a number of damping rods (9) arranged in a ring array at equal intervals below it, and the two ends of each damping rod (9) are rotatably connected to the lower surface of the measuring plate (3) and the upper surface of the base (1) respectively through universal ball bearings.

4. The vibration measuring device according to claim 1, characterized in that: A groove (10) is provided at the center of the upper surface of the measuring plate (3), and a vibrator (11) is fixedly installed inside the groove (10).

5. A vibration measuring device according to claim 1, characterized in that: The clamp (12) includes a fixing plate (14) fixedly installed on the measuring plate (3). The front surface of the fixing plate (14) is provided with threaded holes (16). A lead screw (17) is movably inserted into the threaded hole (16). One end of the lead screw (17) located above the measuring plate (3) is rotatably connected to a clamping plate (13) through a bearing. A handwheel (15) is fixedly connected to the end of the lead screw (17).

6. A vibration measuring device according to claim 5, characterized in that: An anti-slip pad (18) is fixedly installed on the outer surface of the clamp (13).

7. A vibration measuring device according to claim 1, characterized in that: A touch screen (7) is fixedly installed on the upper surface of the computing host (8).

8. A vibration measuring device according to claim 1, characterized in that: A camera (24) is fixedly installed on the lower surface of the L-shaped rotating arm (6).

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