CN209183074U - Magnetic Rotation Vector and Simple Harmonic Vibration Demonstrator - Google Patents

Abstract

The utility model relates to teaching demonstration instruments equipment, more particularly to a kind of magnetic-attractive rotary vector and simple harmonic oscillation demonstrator, including bottom plate (2), setting the bottom plate (2) lower end surface magnetic stand (12) and driving device and setting the bottom plate (2) upper surface round turntable (6) and railroad；The beneficial effect is that round turntable automatic uniform speed rotation driven by the driving device, round turntable, which can rotate forward also, can be reversed rotation, and velocity of rotation is adjustable, can uniform rotation at different rates；And the present apparatus is powered by 220V domestic power supply, and requirement is low, can use in most classrooms；Entire instrument can be adsorbed on blackboard simultaneously, and demonstration is facilitated to use；Entire instrument can be put into a suitcase, convenient for storage and be carried.

Description

Magnetic Rotation Vector and Simple Harmonic Vibration Demonstrator

technical field

The utility model relates to a teaching demonstration instrument and equipment, in particular to a magnetic suction rotating vector and simple harmonic vibration demonstration instrument.

Background technique

Simple harmonic motion is the most basic and simplest mechanical vibration. Circular motion is the most common type of curved motion. Simple harmonic motion can be regarded as the projection of circular motion. Simple harmonic motion and circular motion are interrelated and transformed, and they are the basic contents of physics. Simple harmonic motion and circular motion are topics that cannot be avoided in physics teaching. The teaching method determines the teaching effect. Compared with the abstract language description, with the help of demonstration experiments, students can intuitively see the transformation of circular motion and simple harmonic motion, making the original abstract concept vivid and concrete, easy to understand, and convenient for the development of teaching activities .

Traditional experimental devices such as the patent No. CN103680265B rotation vector analysis demonstrator, due to the use of the horizontal sliding axis to slide horizontally, draw simple harmonic motion through the brush connected to one end of the horizontal axis sliding axis during operation, but in order to meet the horizontal reciprocation of the horizontal sliding axis Moving, the actual size of the horizontal direction will be much longer than the required running size, which will cause the entire device to be too bulky and not easy to carry. At the same time, the patented turntable does not have the function of changing direction and speed, so it cannot be better displayed and understood. Factors affecting simple harmonic motion.

Utility model content

In order to effectively solve the problems in the above-mentioned background technology, the utility model proposes a magnetic rotation vector and simple harmonic vibration demonstration instrument, and the specific technical scheme is as follows:

A magnetic rotation vector and simple harmonic vibration demonstrator, comprising a base plate (2), a magnetic support (12) and a driving device arranged on the lower end surface of the base plate (2), and a drive device arranged on the base plate (2) The circular turntable (6) and slide rail device on the upper end surface;

The slide rail device includes brackets (1) symmetrically arranged on both sides of the bottom plate, a horizontal track (7) arranged between the two brackets, a slider (5) slidingly fitted with the horizontal track (7) and a fixed fit Vertical track (3) on the slide block (5); said slide block (5) is provided with a miniature battery-powered lamp (9);

The outer end surface of the circular turntable (6) is equipped with a sheave bearing (4), and the center of the circular turntable 6 points to the sheave bearing (4) and a rotation vector indicator line (20) is provided between the sheave bearings. (4) Sliding fit in the vertical track (3), the circular turntable (6) is driven by the driving device.

Preferably, the connection sequence of the driving device is a DC power adapter (16), a DC geared motor (13), a governor (17) and a transmission box (14), and the transmission box (14) is fixedly installed on the The center of the bottom plate (2) and connected with the circular turntable (6).

Preferably, a power indicator light (19), a speed control knob (10) and a two-way switch (11) are also provided on the bottom corner of the bottom plate (2).

Its beneficial effects are: 1. By fixing the horizontal track, slide the slider on the horizontal track, and through the fixed connection between the slider and the vertical track, the grooved wheel bearing will move in a uniform circular motion with the circular turntable and move vertically along the vertical track. It slides and drives the vertical track to move horizontally along the horizontal track, and converts the uniform circular motion into the simple harmonic motion of the vertical track and the slider, so that the whole device realizes the fixing of the horizontal track on the premise of realizing the simple harmonic motion display, which is The space of the whole device is reduced, which is convenient for storage and carrying; 2. The circular turntable can automatically rotate at a constant speed under the drive of the DC motor, and the forward and reverse rotation of the circular turntable can be controlled by controlling the two-way switch, and the speed adjustment knob can be used to control the rotation of the circular turntable. The governor connected with the DC gear motor can adjust the rotation speed of the circular turntable, and realize the functions of commutation and speed change, so that students can more easily understand the influence of speed and direction on simple harmonic motion. 3. Through the micro-battery-powered lamp set on the slider and the rotation vector indicator line set on the circular turntable, the user can more intuitively see the simple harmonic motion generated by the device during operation. The new model is powered by a 220V household power supply, with low requirements for use, and can be used in most classrooms; 4. The entire instrument is adsorbed on the blackboard through the magnetic support set on the back of the base plate, which is convenient for theoretical class application, classroom demonstration and whole class viewing.

Description of drawings

Fig. 1 is the front schematic view of the utility model;

Fig. 2 is the reverse schematic diagram of the utility model;

Fig. 3 is a schematic diagram of the utility model transmission box;

Fig. 4 is a top view of the utility model;

Fig. 5 is a schematic diagram of the utility model;

Fig. 6 is a partial schematic diagram of the utility model.

Detailed ways

Below in conjunction with specific embodiment, the technical scheme of this patent is described in further detail;

As shown in Figure 1 and Figure 2, the instrument includes a slide rail bracket 1, a bottom plate 2, a vertical track 3, a sheave bearing 4, a slider 5, a circular turntable 6, a horizontal track 7, a support screw 8, and a miniature battery-powered lamp 9. Speed control knob 10, bidirectional switch 11, magnetic support 12, motor 13, transmission box 14, 220V power plug 15, DC power adapter 16, DC deceleration motor governor 17, power indicator light 19, rotation vector indicator line 20,

As shown in Figure 3, the DC motor 13 is installed on the transmission box 14, and the transmission box rotating shaft 18 is positioned on the transmission box 14;

Perforation is arranged on described base plate 2 as shown in Figure 1, and DC motor 13 and transmission box 14 are installed on the position of perforation on the back side of base plate 2, and transmission box rotating shaft 18 is exposed from the front of base plate 2 through perforation; The wheel bearing 4 is installed on the edge of the circular turntable 6, and then the circular turntable 6 is installed on the transmission box rotating shaft 18 exposed from the front of the bottom plate 2; the horizontal track 7 is fixed on the front of the bottom plate 2 by the slide rail bracket 1, and the slider 5 is fixed In the middle position of the vertical track 3, the slider 5 is installed on the horizontal track 7, and the slider 5 can slide horizontally on the horizontal track 7 with the vertical track 3 fixed on the slider 5; it will be installed on the circular turntable 6 The sheave bearing 4 on the edge is installed in the vertical rail 3, and the sheave bearing 4 can slide vertically along the vertical rail 3; the speed regulating knob 10 and the bidirectional switch 11 are installed in the lower right corner of the bottom plate 2 and pass through the bottom plate 2 from the front;

As shown in Figure 2, the DC geared motor governor 17 and the DC power adapter 16 are installed below the back of the base plate 2; Speed device 17, DC power supply adapter 16 are DC reduction motor governor 17 and DC motor 13 power supply, and the rotation direction and the rotational speed of DC motor 13 are controlled by DC reduction motor governor 17 by speed regulating knob 10 and bidirectional switch 11; There are three magnetic supports 12, which are fixedly installed on the edge of the back side of the base plate 2 through the support screws 8, and the base plate 2 can be adsorbed on the blackboard through the magnetic supports 12. The speed governor adopts a CCM2 DC geared motor speed governor. The rotation vector indicating line 20 is directed by an arrow pointing from the center of the circular turntable 6 to the sheave bearing 4, and its effect is that the rotating vector indicating line 20 shows a simple harmonic motion relative to the horizontal orbit during operation.

Basic operation steps of the utility model:

Take out the instrument and attach the instrument to the blackboard. The 220V power supply plug 15 is inserted into the socket. Connect the power supply, the indicator light 19 is on, and press the two-way switch 11 upwards. At this time, the circular turntable 6 starts to rotate forward and drives the groove wheel bearing 4 to make a uniform circular motion. The groove bearing 4 drives the vertical track 3 and the slider 5 The simple harmonic motion along the horizontal track 7 is transformed into the simple harmonic motion of the vertical track 3 and the slider 5 by the uniform circular transport of the sheave bearing 4 . Turn the speed regulating knob 10, the rotation speed of the circular turntable 6 will change accordingly, and the period and frequency of the simple harmonic motion of the corresponding vertical track 3 and slider 5 will also change. Press down the two-way switch 11, the circular turntable 6 will rotate in the opposite direction, and the corresponding vertical track 3 and slider 5 will also perform simple harmonic motion in the opposite direction.

The micro-battery-powered lamp 9 arranged on the slider 5 is independently powered and moves horizontally on the slider 5, and the slider 5 reciprocates on the horizontal track 7, exhibiting a simple harmonic motion.

The projection of the rotation vector indicating line 20 on the horizontal track during operation shows another simple harmonic motion.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the scope of protection of the invention.

Claims (3)

1. a magnetic suction type rotation vector and simple harmonic vibration demonstrator, it is characterized in that, comprise base plate (2), be arranged on the magnetic bearing (12) of described base plate (2) lower end face and drive unit and be arranged on The circular turntable (6) and slide rail device on the upper end surface of the base plate (2); The slide rail device includes brackets (1) symmetrically arranged on both sides of the base plate, a horizontal track (7) arranged between the two brackets, a slider (5) slidingly fitted with the horizontal track (7) and a fixed fit Vertical track (3) on the slide block (5); said slide block (5) is provided with a miniature battery-powered lamp (9); The outer end surface of the circular turntable (6) is equipped with a sheave bearing (4), and the center of the circular turntable (6) points to the sheave bearing (4) and a rotation vector indicator line (20) is provided between the grooves. The wheel bearing (4) is slidingly fitted in the vertical track (3), and the circular turntable (6) is driven by the driving device. 2. The magnetic suction type rotation vector and simple harmonic vibration demonstrator according to claim 1, characterized in that, the connection sequence of the drive device is followed by DC power adapter (16), DC geared motor (13), speed control A device (17) and a transmission box (14), the transmission box (14) is fixedly installed in the center of the base plate (2) and connected with the circular turntable (6). 3. The magnetic rotation vector and simple harmonic vibration demonstrator according to claim 1, characterized in that, the bottom corner of the base plate (2) is also equipped with a power indicator light (19), which is connected to the DC geared motor Two-way switch (11) and speed regulating knob (10).