Visual vibration comprehensive experiment instrument

Abstract

The invention belongs to the technical field of experimental instruments, and particularly relates to a visual vibration comprehensive experimental instrument which can observe images under different vibration experiments more intuitively and conveniently during vibration experiments through cooperation of a simple pendulum assembly, a visual assembly and a forcing assembly. The conveyor belt made of a fluorescent material is matched with the visual assembly, compared with a traditional mode of displaying images through sandy soil, the problems of sandy soil quality change, uneven laying and the like are avoided, and imaging is more visual; and by arranging the tensioner, winding of the conveying belt can be flexibly adjusted, and it is ensured that the displayed image cannot be distorted or deformed.

Description

Technical Field

[0001] The invention belongs to the technical field of experimental instruments, and in particular relates to a visual vibration comprehensive experimental instrument. Background Art

[0002] At present, traditional vibration experiment instruments have certain limitations in the teaching process. It is difficult to fully display the vibration process, which affects students' deep understanding of the vibration principle. In particular, sand is generally used to display the vibration image trajectory. However, sand is easily affected by problems such as mass change and reset uniformity, which leads to the presented image not being straight enough or being distorted, which is not conducive to correctly and intuitively presenting the effect of the vibration experiment, and it is difficult to meet the experimental and presentation needs of different vibration phenomena. Summary of the invention

[0003] The purpose of the present invention is to provide a visual vibration comprehensive test instrument to solve the problems mentioned in the background technology.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A visual vibration comprehensive experiment instrument comprises a base and a control panel, wherein an experiment mechanism is arranged on the upper end of the base;

[0006] The experimental mechanism comprises a pendulum component, a visual component and a forcing component, wherein the pendulum component is arranged at the rear side of the base, the visual component is arranged at the upper end of the base and corresponds to the pendulum component, and the forcing component is arranged at the side of the visual component and corresponds to the position of the pendulum component;

[0007] The visual component includes a stand, a transmission member and a conveyor belt. The stand is two in number and is symmetrically spaced at the upper end of the base through bolts. The transmission member is disposed between the two stands, and the conveyor belt is wound around the transmission member.

[0008] The conveyor belt is made of fluorescent material, and a light is arranged at the upper end of the base corresponding to the projection area of ​​the conveyor belt.

[0009] The transmission member includes a first motor and a transmission sleeve. The first motor is fixedly arranged on the side of one of the vertical frames. There are two transmission sleeves, which are symmetrically arranged between the two vertical frames front and back. The two transmission sleeves are rotatably connected to the vertical frames on one side, and the two transmission sleeves are rotatably embedded in the vertical frames on the other side. The output shaft of the first motor is transmission-connected to one of the transmission sleeves.

[0010] A tensioner is also provided between the transmission sleeve and the frame away from the side of the single pendulum component. There are two tensioners and they are respectively provided on the two frames. The tensioner includes a fixed plate, a first knob, a first screw and a connecting head. The fixed plate is fixedly connected to the frame. The first knob is rotatably provided on the fixed plate. The first screw is threadedly connected to the fixed plate and concentrically passes through the first knob and is threadedly connected to it. The connecting head is rotatably connected to the first screw toward one end of the single pendulum component. An adjusting groove is provided on the side of the frame. The connecting head extends into the adjusting groove and is connected to the corresponding transmission sleeve. One of the connecting heads is rotatably connected to the transmission sleeve, and the other connecting head is plugged into the transmission sleeve.

[0011] The single pendulum assembly includes a vertical pole, an end, a rotating head and a swing rod. The vertical pole is fixedly arranged at the upper end of the base, the end is fixedly connected to the vertical pole, the rotating head is rotatably connected to the end, the swing rod is fixedly connected to the end of the rotating head and is vertical to the ground in a static state, and a damping knob matching the rotating head is provided on the rear side of the end.

[0012] The end of the swing rod facing the conveyor belt is provided with a laser transmitter.

[0013] The forcing assembly includes a suspension, a second motor, a turntable, an eccentric rod, a telescopic rod and a magnetic plate. The suspension is fixed at the upper end of the base and is located on the side of the single pendulum assembly. The second motor is fixed at the lower end of the suspension. The turntable is rotatably arranged at the upper end of the suspension and is connected to the output shaft of the second motor. The eccentric rod is eccentrically rotatably arranged at the upper end of the turntable. The telescopic rod is slidably arranged at the upper end of the suspension through a guide rail and is hinged to the eccentric rod. The telescopic direction of the telescopic rod is perpendicular to the conveying direction of the conveyor belt. There are two magnetic plates and they are symmetrically arranged at the upper end of the telescopic rod. The pendulum rod is located between the two magnetic plates and magnets that magnetically repel the magnetic plates are arranged on both the left and right ends.

[0014] The turntable is provided with an adjuster matching the eccentric rod, and the adjuster includes a second screw rod, a slider and an adjusting button. The second screw rod is rotatably arranged on the turntable through a bracket, the slider is threadedly connected to the second screw rod and abuts against the turntable, the adjusting button is connected to one end of the second screw rod, and the eccentric rod is rotatably arranged on the upper end of the slider.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] Through the coordination of the simple pendulum component, the visual component and the forcing component, images under different vibration experiments can be observed more intuitively and conveniently during vibration experiments; the conveyor belt made of fluorescent material and the visual component avoid problems such as changes in sand quality and uneven laying, and the imaging is more intuitive compared to the traditional way of displaying images with sand; the setting of the tensioner can flexibly adjust the winding of the conveyor belt to ensure that the displayed image will not be distorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0018] Figure 1 The present invention is a structural schematic diagram of a visual vibration comprehensive experimental instrument.

[0019] Figure 2 Another structural schematic diagram of the present invention.

[0020] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0021] Figure 4 Another structural schematic diagram of the damping knob of the present invention.

[0022] Figure 5 Another structural cross-sectional view of the damping knob of the present invention.

[0023] Base 1, stand 2, conveyor belt 21, light 22, first motor 23, transmission sleeve 24, fixed plate 3, first knob 31, first screw 32, connector 33, adjusting slot 34, stand 4, end 41, swivel head 42, rocker arm 43, suspension 5, second motor 51, turntable 52, eccentric rod 53, telescopic rod 54, magnetic plate 55, magnet 56, second screw 6, slider 61, adjusting knob 62, friction plate 7, connecting rod 71, spring 72, first limit plate 73, second limit plate 74, installation cavity 75, movable cavity 76. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1: Figure 1-5 As shown, the visual vibration comprehensive experimental instrument comprises a base 1 and a control panel, and an experimental mechanism is arranged on the upper end of the base 1;

[0026] The experimental mechanism includes a pendulum component, a visual component and a forcing component. The pendulum component is arranged at the rear side of the base 1, the visual component is arranged at the upper end of the base 1 and corresponds to the pendulum component, and the forcing component is arranged at the side of the visual component and matches the position of the pendulum component.

[0027] The visible component includes a stand 2, a transmission member and a conveyor belt 21. There are two stands 2 and they are symmetrically spaced at the upper end of the base 1 through bolts. The transmission member is arranged between the two stands 2, and the conveyor belt 21 is wound around the transmission member.

[0028] The conveyor belt 21 is made of fluorescent material, and a lamp 22 is provided at the upper end of the base 1 corresponding to the projection area of ​​the conveyor belt 21 .

[0029] When conducting the experiment, the light 22 can be turned on through the control panel first. At this time, the light 22 emits a light source to illuminate the conveyor belt 21. Since the conveyor belt 21 is made of fluorescent material, the conveyor belt 21 will absorb the light source and emit fluorescence. As the conveyor belt 21 leaves the light 22, its light source gradually dims until it absorbs the light source again and emits fluorescence when passing between the simple pendulum groups, thereby displaying the trajectory of the simple pendulum component on the conveyor belt 21 in a visual manner. The simple pendulum component can be pushed by toggling or forcing the component to make it swing, and the amplitude of the swing is controlled at 5°. In this way, the swing trajectory of the simple pendulum component will be displayed on the conveyor belt 21, and gradually move away from the single pendulum component as the conveyor belt 21 moves and the fluorescence is released, and after passing through the light 22 area again to fully absorb the light, it will recover and prepare for a new trajectory display. Compared with the traditional method of using sand to display the pendulum trajectory, it is more convenient and can avoid improper or unclear display of the pendulum trajectory due to changes in sand quality or uneven laying.

[0030] The transmission member includes a first motor 23 and a transmission sleeve 24. The first motor 23 is fixedly arranged on the side of one of the vertical frames 2. There are two transmission sleeves 24, which are symmetrically arranged between the two vertical frames 2. The two transmission sleeves 24 are rotatably connected to the vertical frames 2 on one side, and the two transmission sleeves 24 are rotatably embedded in the vertical frames 2 on the other side. The output shaft of the first motor 23 is transmission-connected to one of the transmission sleeves 24.

[0031] The single pendulum assembly includes a vertical rod 4, an end 41, a rotating head 42 and a swing rod 43. The vertical rod 4 is fixedly arranged at the upper end of the base 1, the end 41 is fixedly connected to the vertical rod 4, the rotating head 42 is rotatably connected to the end 41, the swing rod 43 is fixedly connected to the end of the rotating head 42 and is vertical to the ground in a static state, and a damping knob matching the rotating head 42 is provided on the rear side of the end 41.

[0032] A laser emitter is disposed at one end of the swing rod 43 facing the conveyor belt 21 .

[0033] The first motor 23 starts its output shaft to drive the transmission sleeve 24 to connect. Through the winding setting of the conveyor belt 21, the two transmission sleeves 24 can be used to stably convey the conveyor belt 21 to circulate, that is, to meet the needs of experimental visualization. When showing the trajectory of the vibration experiment, the swing rod 43 can be pushed to make it swing, and according to the needs of the experiment, different experimental needs of damping, over-damped vibration, forced vibration, and resonance can be achieved by directly pushing the swing rod 43, adjusting the damping knob, and using a forcing component. The damping knob is applied by rotating to apply the rotational resistance of the rotating head 42 to achieve the effect of damping adjustment. Specifically, in some embodiments, it is realized by using a spring and a friction plate, that is, the damping change is achieved by rotating the damping knob to push the spring and then act on the friction plate to abut the rotating head 42 to increase or decrease the pressure;

[0034] The laser transmitter can synchronize the swing of the swing rod 43 and emit laser light to illuminate the conveyor belt 21 to generate fluorescent brightness that supplements the conveyor belt 21, thereby displaying the trajectory of the vibration experiment.

[0035] The forcing assembly includes a suspension 5, a second motor 51, a turntable 52, an eccentric rod 53, a telescopic rod 54 and a magnetic plate 55. The suspension 5 is fixedly arranged at the upper end of the base 1 and is located on the side of the single pendulum assembly. The second motor 51 is fixedly arranged at the lower end of the suspension 5. The turntable 52 is rotatably arranged at the upper end of the suspension 5 and is connected to the output shaft of the second motor 51. The eccentric rod 53 is eccentrically rotatably arranged at the upper end of the turntable 52. The telescopic rod 54 is slidably arranged at the upper end of the suspension 5 through a guide rail and is hinged to the eccentric rod 53. The telescopic direction of the telescopic rod 54 is perpendicular to the conveying direction of the conveyor belt 21. There are two magnetic plates 55 and they are symmetrically arranged at the upper end of the telescopic rod 54. The pendulum rod 43 is located between the two magnetic plates 55 and magnets 56 that magnetically repel the magnetic plates 55 are arranged on both the left and right ends.

[0036] When conducting forced vibration and resonance experiments, the second motor 51 can be turned on through the control panel to drive the turntable 52. When the turntable 52 rotates, the telescopic rod 54 will be pushed and pulled cyclically through the eccentric rod 53, so that the magnetic plate 55 on the telescopic rod 54 is cyclically close to the magnet on the pendulum 43. At this time, through the mutual repulsion between the magnet and the magnetic plate 55, in the initial stage, the magnetic plate 55 pushes the pendulum 43 with a large amplitude, which will show the effect of forced vibration. After the swing amplitude range of the pendulum 43 is stable, the magnetic plate 55 will be synchronized to resonate, that is, the mutual repulsion between the magnetic plate 55 and the magnet will generate a push. In this way, the rotation speed of the second motor 51 can be used to observe the size of the input frequency and the amplitude change of the image presented on the conveyor belt 21, so as to intuitively display the resonance phenomenon.

[0037] Furthermore, a camera may be provided at the front end of the bottom plate, i.e., the front side of the conveyor belt 21, and a transparent acrylic plate with a scale may be provided on the upper side of the stand 2, so that after the conveyor belt 21 presents an image, the image may be captured by the camera for recording and preservation, to avoid the situation where the corresponding image information cannot be observed again after the conveyor belt 21 is restored by the light 22.

[0038] Example 2: Figure 1-2As shown, it is a further improvement on the basis of Example 1, a tensioner is further provided between the transmission sleeve 24 away from the side of the single pendulum component and the frame 2, the number of the tensioners is two and they are respectively provided on the two frames 2, the tensioner comprises a fixing plate 3, a first knob 31, a first screw 32 and a connecting head 33, the fixing plate 3 is fixedly connected to the frame 2, the first knob 31 is rotatably provided on the fixing plate 3, the first screw 32 is threadedly connected to the fixing plate 3 and concentrically penetrates the first knob 31 and is threadedly connected to it, the connecting head 33 is rotatably connected to the first screw 32 toward one end of the single pendulum component, an adjusting slot 34 is opened on the side of the frame 2, the connecting head 33 extends into the adjusting slot 34 and is connected to the corresponding transmission sleeve 24, one of the connecting heads 33 is rotatably connected to the transmission sleeve 24, and the other connecting head 33 is plugged into the transmission sleeve 24.

[0039] Furthermore, in order to avoid distortion of the image caused by relaxation of the conveyor belt 21 during installation, replacement or long-term use, the first knobs 31 of the two tensioners can be rotated at the same time when necessary, thereby controlling the first screw 32 to extend and retract forward and backward to change the distance position between the two transmission sleeves 24, thereby achieving the effect of tensioning the conveyor belt 21.

[0040] Example 3: Figure 3 As shown, a further improvement based on Example 1 is provided on the turntable 52 with an adjuster matching the eccentric rod 53, the adjuster includes a second screw 6, a slider 61 and an adjusting button 62, the second screw 6 is rotatably arranged on the turntable 52 through a bracket, the slider 61 is threadedly connected to the second screw 6 and abuts against the turntable 52, the adjusting button 62 is connected to one end of the second screw 6, and the eccentric rod 53 is rotatably arranged on the upper end of the slider 61.

[0041] In order to further meet the forced vibration test effects in different states, the second screw 6 can be rotated by adjusting the knob 62 according to specific experimental needs, thereby adjusting the position of the slider 61 from the center of the turntable 52, that is, changing the eccentricity of the eccentric rod 53 on the turntable 52, so as to achieve different vibration test effects.

[0042] Embodiment 4: The damping knob may also be as follows Figure 4-5The structure shown includes an end 41, a rotating head 42, a friction plate 7, a connecting rod 71, a spring 72, a first limit plate 73 and a second limit plate 74. The rotating head 42 is rotatably arranged in the end 41. The end 41 is sequentially opened with an active cavity 76 and an installation cavity 75 which are not connected to each other from the axis to the outside. The connecting rod 71 is perpendicular to the axis of the end 41 and slides through the installation cavity and the active cavity. The friction plate 7 is located in the active cavity and connected to one end of the connecting rod 71. The first limit plate 73 and the second limit plate 74 are both concentrically connected to the connecting rod 71. The first limit plate 73 is located in the installation cavity, and the second limit plate 74 is located on the outside of the end 41. The spring 72 is sleeved on the connecting rod 71 and is located between the first limit plate 73 and the inner wall of the installation cavity on the side close to the axis of the end 41.

[0043] In this way, when actually adjusting the swing damping of the rotating head 42, a weight of a specific gram weight can be placed on the second limit plate 74, and then the second limit plate 74 pushes the connecting rod 71 to produce a telescopic displacement, so as to achieve the effect of using the friction plate 7 to abut against the rotating head 42 to change the damping rotation force. Since the gram weight of the weight is constant, the adjustment is more accurate.

[0044] Furthermore, in order to adapt to more flexible damping adjustment needs, an electric control connecting rod 71 can also be set at the upper end of the connecting rod 71, and a pressure sensor can be set between the friction plate 7 and the rotating head 42, so that the friction plate 7 can be pushed to abut the rotating head 42 by utilizing the extension and contraction of the electric control connecting rod 71, and the applied damping can be converted by the pressure sensor, so as to achieve more flexible damping adjustment needs.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. Visual vibration comprehensive test instrument, including a base and a control panel, characterized by: The upper end of the base is provided with an experimental mechanism; The experimental mechanism comprises a pendulum component, a visual component and a forcing component, wherein the pendulum component is arranged at the rear side of the base, the visual component is arranged at the upper end of the base and corresponds to the pendulum component, and the forcing component is arranged at the side of the visual component and corresponds to the position of the pendulum component; The visual component includes a stand, a transmission member and a conveyor belt. The stand is two in number and is symmetrically spaced at the upper end of the base through bolts. The transmission member is disposed between the two stands, and the conveyor belt is wound around the transmission member.

2. The visual vibration comprehensive test instrument according to claim 1, characterized in that: The conveyor belt is made of fluorescent material, and a light is arranged at the upper end of the base corresponding to the projection area of ​​the conveyor belt.

3. The visual vibration comprehensive test instrument according to claim 2 is characterized in that: The transmission member includes a first motor and a transmission sleeve. The first motor is fixedly arranged on the side of one of the vertical frames. There are two transmission sleeves, which are symmetrically arranged between the two vertical frames front and back. The two transmission sleeves are rotatably connected to the vertical frames on one side, and the two transmission sleeves are rotatably embedded in the vertical frames on the other side. The output shaft of the first motor is transmission-connected to one of the transmission sleeves.

4. The visual vibration comprehensive test instrument according to claim 3 is characterized in that: A tensioner is also provided between the transmission sleeve and the frame away from the side of the single pendulum component. There are two tensioners and they are respectively provided on the two frames. The tensioner includes a fixed plate, a first knob, a first screw and a connecting head. The fixed plate is fixedly connected to the frame. The first knob is rotatably provided on the fixed plate. The first screw is threadedly connected to the fixed plate and concentrically passes through the first knob and is threadedly connected to it. The connecting head is rotatably connected to the first screw toward one end of the single pendulum component. An adjusting groove is provided on the side of the frame. The connecting head extends into the adjusting groove and is connected to the corresponding transmission sleeve. One of the connecting heads is rotatably connected to the transmission sleeve, and the other connecting head is plugged into the transmission sleeve.

5. The visual vibration comprehensive test instrument according to claim 4 is characterized in that: The single pendulum assembly includes a vertical pole, an end, a rotating head and a swing rod. The vertical pole is fixedly arranged at the upper end of the base, the end is fixedly connected to the vertical pole, the rotating head is rotatably connected to the end, the swing rod is fixedly connected to the end of the rotating head and is vertical to the ground in a static state, and a damping knob matching the rotating head is provided on the rear side of the end.

6. The visual vibration comprehensive test instrument according to claim 5, characterized in that: The end of the swing rod facing the conveyor belt is provided with a laser transmitter.

7. The visual vibration comprehensive test instrument according to claim 6, characterized in that: The forcing assembly includes a suspension, a second motor, a turntable, an eccentric rod, a telescopic rod and a magnetic plate. The suspension is fixed at the upper end of the base and is located on the side of the single pendulum assembly. The second motor is fixed at the lower end of the suspension. The turntable is rotatably arranged at the upper end of the suspension and is connected to the output shaft of the second motor. The eccentric rod is eccentrically rotatably arranged at the upper end of the turntable. The telescopic rod is slidably arranged at the upper end of the suspension through a guide rail and is hinged to the eccentric rod. The telescopic direction of the telescopic rod is perpendicular to the conveying direction of the conveyor belt. There are two magnetic plates and they are symmetrically arranged at the upper end of the telescopic rod. The pendulum rod is located between the two magnetic plates and magnets that magnetically repel the magnetic plates are arranged on both the left and right ends.

8. The visual vibration comprehensive test instrument according to claim 7 is characterized in that: The turntable is provided with an adjuster matching the eccentric rod, and the adjuster includes a second screw rod, a slider and an adjusting button. The second screw rod is rotatably arranged on the turntable through a bracket, the slider is threadedly connected to the second screw rod and abuts against the turntable, the adjusting button is connected to one end of the second screw rod, and the eccentric rod is rotatably arranged on the upper end of the slider.

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