Forced vibration and resonance phenomenon demonstration device
By introducing the design of the adjustment base, resonance rod and limit bump into the resonance experimental instrument, the problem that traditional instruments cannot intuitively display the driving force frequency and amplitude change too quickly, and the control of the hook code vibration direction and amplitude stability are achieved. Enhanced the observability and recordability of the experiment.
Patent Information
- Application Number
- CN202420541981.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-20
AI Technical Summary
Traditional resonance experimental instruments cannot visually display the driving force frequency, resulting in the uncontrolled direction of the hook code vibration, the amplitude changes too quickly, and it is difficult to record, and the relationship between the forced vibration frequency and the driving force frequency cannot be quantitatively determined.
A forced vibration and resonance phenomenon demonstration device is designed, including adjustment base, resonance rod base, fixed block, counterweight block, motor and driving source. By setting the driving source, the driving force frequency is displayed, and the driving force frequency is adjusted The resonance rod and limit bump control the vibration direction of the hook code to ensure the consistency of the vibration period.
It realizes intuitive display of driving force frequency, control of the vibration direction of hook code, and stable amplitude changes, helps students to intuitively observe the resonance phenomenon, and enhances the reliability and recordability of the experiment.
Smart Images
Figure CN222167787U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of teaching equipment, in particular to a forced vibration and resonance phenomenon demonstration device. Background Art
[0002] Traditional resonance experimental instruments do not display the frequency of the driving force, so it is impossible to know its frequency intuitively. One can only qualitatively observe that the frequency of the driving force has changed, and the frequency of the object's forced vibration has also changed. It is impossible to quantitatively obtain the important conclusion that the frequency of the object's forced vibration is equal to the frequency of the driving force and has nothing to do with the object's natural frequency.
[0003] In traditional resonance experimental instruments, the hook weight is forced to vibrate in the vertical direction through the combined force of the elastic force of two springs and the gravity of the hook weight. The device is not designed with a vertical smooth rod on which the spring and the hook weight can be put to control the vibration direction of the hook weight. Therefore, after the power is turned on, the hook weight does not only perform regular forced vibration up and down, but also vibrates left and right and front and back while vibrating up and down, resulting in each vibration period being not completely equal, and the amplitude of the hook weight changes too quickly, which is difficult to record.
[0004] Therefore, a new type of frequency modulation resonance experimental instrument with displayable frequency is urgently needed to solve these problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, the utility model aims to provide a forced vibration and resonance phenomenon demonstration device to solve the problem that the resonance experimental equipment in the prior art cannot intuitively observe the driving force frequency and the hook code amplitude changing too fast and is difficult to record.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A forced vibration and resonance phenomenon demonstration device comprises an adjustment base, a resonance rod base, a fixed block, a resonance rod, a counterweight block, a motor and an instigation source, wherein the resonance rod base is connected to the adjustment base, the fixed block is detachably connected to the resonance rod base, a fixing groove is provided on the fixed block, a counterweight groove is provided on the counterweight block, one end of the resonance rod is connected to the fixing groove, the other end of the resonance rod is connected to the counterweight groove, the motor is fixedly connected to the adjustment base, the instigation source is connected to the motor, a connecting mechanism is fixedly arranged on the resonance rod base, and one end of the connecting mechanism is rotatably connected to the output end of the motor.
[0008] Compared with the prior art, the forced vibration and resonance phenomenon demonstration device of the present application has the following beneficial effects:
[0009] In actual application, by setting the driving source to connect the motor to drive the demonstration device, the frequency of the driving force can be displayed. When the displayed frequency increases, the counterweight block on the top of the resonance rod will swing left and right at a certain angle. Three groups of resonance rods of different lengths are connected to the base of the resonance rod to display the natural frequency of the combination of resonance rods and counterweight blocks at different heights. The counterweight block can be installed and fixed at any position of the resonance rod. The demonstration device has a simple structure and is easy to operate, which can help students observe the resonance phenomenon intuitively.
[0010] Preferably, the resonance rod base includes a slider and a sliding seat, the slider is provided with a sliding groove, a sliding cylinder is fixedly arranged in the sliding groove, the sliding seat is fixedly connected to the adjustment base, a rotating bearing is arranged on the sliding seat, the rotating bearing is rotatably connected to the sliding seat, and the rotating bearing is slidably connected to the sliding cylinder.
[0011] Beneficial effect: By opening a sliding groove on the slider and arranging two sliding cylinders on the inner side for auxiliary sliding, the sliding groove is matched with the rotating bearing on the sliding seat, so as to achieve the effect of sliding connection between the slider and the sliding seat.
[0012] Preferably, the connecting mechanism includes a bracket, a connecting rod, a rotating rod and a snap pin, the bracket is fixedly connected to the sliding groove, the bracket is provided with a first through hole, the connecting rod is fixedly connected in the first through hole, one end of the connecting rod is provided with a second through hole, the rotating rod is provided with a third through hole and a fourth through hole, one end of the snap pin passes through the third through hole and is movably connected to the second through hole, the other end of the snap pin is snapped with the connecting rod, and the fourth through hole is rotatably connected to the output end of the motor.
[0013] Beneficial effect: By setting a connecting rod and a rotating rod, the output end of the motor is connected to the slider for transmission, so that the rotation of the motor drives the slider to slide back and forth. The buckle pin set between the rotating rod and the connecting rod is convenient for users to assemble and makes the rotation connection between the two more stable.
[0014] Preferably, the fixing block comprises a first fixing block and a second fixing block, the first fixing block is fixedly connected to the sliding block, and the first fixing block is screwed to the second fixing block.
[0015] Beneficial effects: The fixed block can be detachably connected to the slide block, making it more convenient to assemble the demonstration device and facilitate experiments.
[0016] Preferably, a limiting protrusion is provided on the sliding groove.
[0017] Beneficial effect: The sliding stroke of the slider relative to the slide seat is limited by setting the limiting protrusion.
[0018] Preferably, an adjusting knob is further provided, a rotating through hole is provided on the adjusting base, and the adjusting knob is threadedly connected to the rotating through hole.
[0019] Beneficial effect: The placement angle of the base can be adjusted by rotating the adjustment knob so that it is placed horizontally relative to the bottom.
[0020] Preferably, a universal level is also provided on the adjustment base.
[0021] Beneficial effect: By setting a universal level, the placement angle of the base can be adjusted to ensure the demonstration effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic structural diagram of a forced vibration and resonance phenomenon demonstration device provided by an embodiment of the utility model;
[0023] Figure 2 A schematic diagram of the structure of a slider provided in an embodiment of the utility model;
[0024] Figure 3 A schematic diagram of the structure of a slide provided in an embodiment of the utility model;
[0025] Figure 4 A schematic diagram of the structure of a fixed block, a resonance rod and a counterweight block provided in an embodiment of the utility model;
[0026] Figure 5 A schematic diagram of the structure of a fixed block, a resonance rod and a counterweight block provided in an embodiment of the utility model;
[0027] Figure 6 A schematic diagram of the structure of the adjustment base provided in the embodiment of the utility model;
[0028] Figure 7 A schematic diagram of the structure of a counterweight block provided in an embodiment of the utility model;
[0029] Figure 8 A schematic diagram of the structure of a fixing block provided in an embodiment of the utility model;
[0030] Fig. 9 This is a structural exploded diagram of the connection mechanism provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0031] The following is further described in detail through specific implementation methods:
[0032] The figure marks in the drawings of the specification include: adjustment base 1, resonance rod base 2, fixed block 3, resonance rod 4, counterweight block 5, motor 6, driving source 7, fixed groove 8, counterweight groove 9, connecting mechanism 10, slider 11, slide seat 12, sliding groove 13, sliding cylinder 14, rotating bearing 15, bracket 16, connecting rod 17, rotating rod 18, snap pin 19, first through hole 20, second through hole 21, third through hole 22, fourth through hole 23, first fixed block 24, second fixed block 25, limit protrusion 26, adjustment knob 27, rotating through hole 28, universal level 29.
[0033] As attached Figure 1-7 As shown: This embodiment shows a forced vibration and resonance phenomenon demonstration device, including an adjustment base 1, a resonance rod base 2, a fixed block 3, a resonance rod 4, a counterweight block 5, a motor 6 and an instigation source 7, the resonance rod base 2 is connected to the adjustment base 1, the fixed block 3 is detachably connected to the resonance rod base 2, a fixing groove 8 is provided on the fixed block 3, a counterweight groove 9 is provided on the counterweight block 5, one end of the resonance rod 4 is connected to the fixing groove 8, the other end of the resonance rod 4 is connected to the counterweight groove 9, the motor 6 is fixedly connected to the adjustment base 1, the instigation source 7 is connected to the motor 6, and a connecting mechanism 10 is fixedly arranged on the resonance rod base 2, and one end of the connecting mechanism 10 is rotatably connected to the output end of the motor 6.
[0034] Specifically, before the experiment, observe the universal level 29 to ensure that the adjustment base 1 is placed horizontally, turn the knob of the driving source 7, and it can be observed that the display frequency of the driving source 7 gradually increases, and the counterweight block 5 at the top of the resonance rod 4 will swing left and right at a certain angle. When the frequency of the driving force gradually approaches the natural frequency of the pendulum from small to large, and then continues to increase and gradually moves away from the natural frequency of the pendulum, the demonstration device is realized to deepen students' understanding of the meaning of the resonance curve in the textbook.
[0035] like Figure 2-3 As shown, the resonance rod base 2 of this embodiment includes a slider 11 and a slide seat 12. The slider 11 is provided with a sliding groove 13. A sliding cylinder 14 is fixedly arranged in the sliding groove 13. The slide seat 12 is fixedly connected to the adjustment base 1. A rotating bearing 15 is arranged on the slide seat 12. The rotating bearing 15 is rotatably connected to the slide seat 12, and the rotating bearing 15 is slidably connected to the sliding cylinder 14.
[0036] Specifically, two sliding cylinders 14 are arranged inside the sliding groove 13 , and the sliding cylinders 14 cooperate with the rotating bearing 15 to make the sliding more labor-saving.
[0037] As attached Figure 2 and 9As shown: the connecting mechanism 10 of this embodiment includes a bracket 16, a connecting rod 17, a rotating rod 18 and a snap pin 19, the bracket 16 is fixedly connected to the sliding groove 13, the bracket 16 is provided with a first through hole 20, the connecting rod 17 is fixedly connected in the first through hole 20, one end of the connecting rod 17 is provided with a second through hole 21, the rotating rod 18 is provided with a third through hole 22 and a fourth through hole 23, one end of the snap pin 19 passes through the third through hole 22 and is movably connected to the second through hole 21, the other end of the snap pin 19 is snapped with the connecting rod 17, and the fourth through hole 23 is rotatably connected to the output end of the motor 6.
[0038] Specifically, by providing a snap pin 19 to connect the connecting rod 17 and the rotating rod 18, the latch-type connection method is convenient for users to install, and the other end of the snap pin 19 is snapped onto the fixing piece of the connecting rod 17, making the connection between the two more secure and not easy to fall off.
[0039] As attached Figure 8 As shown: the fixing block 3 of this embodiment includes a first fixing block 24 and a second fixing block 25. The first fixing block 24 is fixedly connected to the slider 11, and the first fixing block 24 and the second fixing block 25 are screwed together.
[0040] Specifically, the first fixing block 24 and the second fixing block 25 are connected by screws, which is convenient for users to disassemble and assemble, and convenient for users to adjust the fixing position of the fixing block 3 and the sliding block 11 .
[0041] As attached Figure 2 As shown: a limiting protrusion 26 is provided on the sliding groove 13 of this embodiment.
[0042] Specifically, a limiting protrusion 26 is provided at one end of the sliding groove 13 away from the motor 6 , and the sliding stroke of the sliding block 11 and the sliding seat 12 is limited by the limiting protrusion 26 .
[0043] As attached Figure 6 As shown: this embodiment is further provided with an adjusting knob 27 , a rotating through hole 28 is opened on the adjusting base 1 , and the adjusting knob 27 is threadedly connected with the rotating through hole 28 .
[0044] Specifically, four groups of adjusting knobs 27 are provided on the adjusting base 1 . Through the threaded connection between the adjusting knobs 27 and the rotating through holes 28 , the user can rotate the adjusting knobs 27 to adjust the placement angle of the adjusting base 1 .
[0045] As attached Figure 6 As shown: a universal level 29 is also provided on the adjustment base 1 of this embodiment.
[0046] Specifically, the universal level 29 is fixed in the middle of the adjustment base 1 , so that the user can observe the angle of the adjustment base 1 through the universal level 29 during adjustment.
[0047] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A forced vibration and resonance phenomenon demonstration device, characterized in that: The invention comprises an adjusting base (1), a resonance rod base (2), a fixing block (3), a resonance rod (4), a counterweight block (5), a motor (6) and an actuating source (7); the resonance rod base (2) is connected to the adjusting base (1); the fixing block (3) is detachably connected to the resonance rod base (2); a fixing groove (8) is provided on the fixing block (3); a counterweight groove (9) is provided on the counterweight block (5); one end of the resonance rod (4) is connected to the fixing groove (8); the other end of the resonance rod (4) is connected to the counterweight groove (9); the motor (6) is fixedly connected to the adjusting base (1); the actuating source (7) is connected to the motor (6); a connecting mechanism (10) is fixedly provided on the resonance rod base (2); one end of the connecting mechanism (10) is rotatably connected to the output end of the motor (6).
2. A forced vibration and resonance phenomenon demonstration device according to claim 1, characterized in that: The resonant rod base (2) comprises a slider (11) and a slide seat (12); the slider (11) is provided with a sliding groove (13); a sliding cylinder (14) is fixedly arranged in the sliding groove (13); the slide seat (12) is fixedly connected to the adjustment base (1); a rotating bearing (15) is arranged on the slide seat (12); the rotating bearing (15) is rotatably connected to the slide seat (12); and the rotating bearing (15) is slidably connected to the sliding cylinder (14).
3. A forced vibration and resonance phenomenon demonstration device according to claim 2, characterized in that: The connecting mechanism (10) comprises a bracket (16), a connecting rod (17), a rotating rod (18) and a buckle pin (19); the bracket (16) is fixedly connected to the sliding groove (13); a first through hole (20) is provided on the bracket (16); the connecting rod (17) is fixedly connected in the first through hole (20); a second through hole (21) is provided at one end of the connecting rod (17); a third through hole (22) and a fourth through hole (23) are provided on the rotating rod (18); one end of the buckle pin (19) passes through the third through hole (22) and is movably connected to the second through hole (21); the other end of the buckle pin (19) is buckled with the connecting rod (17); and the fourth through hole (23) is rotatably connected to the output end of the motor (6).
4. The forced vibration and resonance phenomenon demonstration device according to claim 2, characterized in that: The fixing block (3) comprises a first fixing block (24) and a second fixing block (25); the first fixing block (24) is fixedly connected to the sliding block (11); and the first fixing block (24) and the second fixing block (25) are screw-connected.
5. The forced vibration and resonance phenomenon demonstration device according to claim 2, characterized in that: A limiting protrusion (26) is provided on the sliding groove (13).
6. The forced vibration and resonance phenomenon demonstration device according to claim 1, characterized in that: An adjusting knob (27) is also provided, a rotating through hole (28) is provided on the adjusting base (1), and the adjusting knob (27) is threadedly connected to the rotating through hole (28).
7. The forced vibration and resonance phenomenon demonstration device according to claim 1, characterized in that: The adjustment base (1) is also provided with a universal level (29).