CN212084465U - A kind of physical parabola teaching aids - Google Patents

Abstract

The utility model belongs to the technical field of teaching equipment, and discloses a physical parabola teaching aid. A hinged piece is installed on the vertical support rod, and an ejection device that can shoot magnetic balls is hinged on the hinged piece; the tail of the ejection device is provided with a hinged joint that fits with the hinged piece, and the hinged piece and the hinged head are provided with corresponding plugs A bolt is inserted into the jack, and one end of the bolt is provided with a tightening nut that can fix the hinged piece and the hinged head. In the utility model, the ejection device of the magnetic ball is installed on the hinged piece of the vertical support rod through the hinge joint. During the teaching process of the physical parabola, the ejection device can be adjusted from multiple angles, so that the magnetic ball can be ejected from different angles and can be ejected from the iron. The powder track capture board draws the movement track of the magnetic ball, which is convenient for teachers to teach and operate, and also conducive to students' understanding.

Description

A kind of physical parabola teaching aids

technical field

The utility model belongs to the technical field of teaching equipment, in particular to a physical parabola teaching aid.

Background technique

After the object is thrown at a certain speed, its trajectory is a parabola. In the process of physics teaching, parabola demonstration teaching aids need to be used, but the existing parabola demonstration teaching aids have a single function, and can only perform simple parabola demonstration, such as only throwing at a certain horizontal initial velocity, demonstrating the trajectory of the object's flat throw, It is not possible to demonstrate the trajectory of objects thrown along various angles as needed; and teachers often teach by hand-painting parabolas on the blackboard or demonstrating parabolas on the computer, which is not conducive to students' understanding and affects the quality of teaching.

Utility model content

Based on the above problems, the present invention provides a teaching aid for physical parabola, in which the ejection device of the magnetic ball is installed on the hinged piece of the vertical support rod through the hinge joint, and the ejection device can be adjusted at multiple angles during the teaching of the physical parabola. The magnetic ball can be shot from different angles, and the movement trajectory of the magnetic ball can be drawn on the iron powder trajectory capture board, which is convenient for teachers to teach and operate, and also conducive to students' understanding.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A physical parabola teaching aid, comprising a base plate, an iron powder track capture plate and a vertical support rod are installed on the upper surface of the base plate, the iron powder track capture plate and the vertical support rod are both perpendicular to the upper surface of the base plate, and the vertical support rod is connected to the iron powder track capture plate and the vertical support rod. The powder track capture plate is located in the same plane; a hinge piece is installed on the vertical support rod, and an ejection device that can shoot magnetic balls is hinged on the hinge piece; the tail of the ejection device is provided with a hinge joint that fits with the hinge piece, and the hinge piece and the hinge joint are on the hinge piece. Corresponding jacks are provided in the jacks, bolts are inserted in the jacks, and one end of the bolts is provided with a tightening nut that can fix the hinge piece and the hinge joint.

Further, a sliding bar is fixed on the bottom plate, a clamping strip is fixed at the bottom of the iron powder track capture plate, a clamping groove that fits with the sliding strip is opened at the bottom of the clamping strip, and a threaded hole is opened on the side wall of the clamping strip at a position corresponding to the clamping groove. , the clip is fixed on the slider by screws.

Further, the slider is installed with a slider, the bottom of the slider is provided with a slot that fits with the slider, the vertical support rod is fixed on the top of the slider, and the slider is installed on the slider by tightening the bolts.

Further, a sleeve is installed on the vertical support rod, the outer wall of the sleeve is provided with two tightening bolts that can fix the sleeve on the vertical support rod, and the hinge plate is installed on the outer wall of the sleeve.

Further, a pointer is provided on the hinge piece, a scale is provided on the hinge head at a position corresponding to the pointer, and the scale on the hinge head corresponds to the inclination angle of the ejection device.

Further, the ejection device includes an ejection cylinder, and the bottom of the ejection cylinder is fixedly connected with the hinge joint; the ejection cylinder is provided with an opposite impact head, and a spring is arranged between the impact head and the bottom of the ejection cylinder; Axial guide groove, a positioning rod is installed on the side wall of the impact head, the positioning rod extends from the guide groove to the outer wall of the ejection cylinder, and the edge of the guide groove is provided with a positioning gap that can clamp the positioning rod.

Further, there are a plurality of positioning notches, and the plurality of positioning notches are evenly distributed along the edge of the guide groove.

Compared with the prior art, the beneficial effect of the present utility model is: the utility model installs the ejection device of the magnetic ball on the hinged piece of the vertical support rod through the hinged joint, and can adjust the multi-angle during the teaching of the physical parabola. The ejection device enables the magnetic ball to be ejected from different angles and draws the movement track of the magnetic ball on the iron powder track capture board, which is convenient for teachers to teach and operate, and also conducive to students' understanding.

Description of drawings

Fig. 1 is the structural representation of a kind of physical parabola teaching aid in the embodiment;

Fig. 2 is the connection schematic diagram of the hinge piece, the hinge head and the ejection device in the embodiment;

Fig. 3 is the connection schematic diagram of the bottom plate, the slider, the clip and the iron powder track capture plate in the embodiment;

Fig. 4 is the enlarged schematic diagram of part A in Fig. 1;

5 is a schematic three-dimensional structure diagram of an ejection cylinder in the ejection device in the embodiment;

Among them: 1. Bottom plate; 2. Iron powder track capture plate; 3. Vertical support rod; 4. Hinged piece; 5. Magnetic ball; 6. Hinged joint; 7. Tightening nut; ;10. Slider; 11. Tighten bolt one; 12. Sleeve; 13. Tighten bolt two; 14. Pointer; 15. Ejector; 16. Impact head; 17. Spring; ; 20. Positioning gap.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described in further detail below in conjunction with the embodiments and the accompanying drawings. The invention is not intended to limit the present invention.

Example:

Referring to Figures 1 and 2, a physical parabola teaching aid includes a base plate 1, and an iron powder track capture plate 2 and a vertical support rod 3 are installed on the upper surface of the base plate 1, and the iron powder track capture plate 2 and the vertical support rod 3 are both. Perpendicular to the upper surface of the bottom plate 1, the vertical support rod 3 and the iron powder track capture plate 2 are located in the same plane; the vertical support rod 3 is installed with a hinge piece 4, and the hinge piece 4 is hinged with the ejection that can shoot the magnetic ball 5 The rear of the ejection device is provided with a hinged joint 6 that fits with the hinged piece 4, the hinged piece 4 and the hinged joint 6 are both provided with corresponding jacks, and bolts are inserted in the jacks, and one end of the bolts is installed with the hinged piece. 4. Tighten the nut 7 fixed with the hinge joint 6.

The iron powder track capture board 2 is a plurality of densely arranged white polygonal prisms sandwiched between two layers of plates, iron powder is installed in the gap between two adjacent prisms, and the bottom surface is a magnetic strip, when the magnetic strip is moved When the magnetic pen is drawn on the top, the iron powder is sucked to the bottom, and the upper layer is made of transparent material; when the magnetic pen is drawn on it, the iron powder will be sucked to the transparent layer along the path to show the path of the magnetic pen. If the back is swept with a magnetic stripe, the iron powder will be sucked into the gaps between the prisms to erase the displayed traces. In this embodiment, the magnetic ball 5 is first installed in the ejection device, so that the magnetic ball 5 in the ejection device faces the iron powder track capture plate 2 , and the magnetic ball 5 can just pass the surface of the iron powder track capture plate 2 . After the ejection device is started, the magnetic ball 5 is ejected from the ejection device and performs a parabolic motion. During the movement, the magnetic ball 5 will adsorb the iron powder at the corresponding position of the iron powder track capture plate 2, so that the iron powder track capture plate 2 The motion trajectory of the magnetic ball 5 is shown on the top. Because the ejection device is hinged with the hinged joint 6 fixed on the vertical support rod 3 through the hinged joint 6, before the test, the screw nut 7 can be unscrewed, and then the ejection angle of the ejection device can be adjusted to make the magnetic ball 5 from Shooting from different angles and drawing the corresponding movement trajectory of the magnetic ball 5 on the iron powder trajectory capture board 2 is convenient for teachers to teach and operate, and also conducive to students' understanding.

Referring to Figure 1-3, a slide bar 8 is fixed on the bottom plate 1, a clip 9 is fixed on the bottom of the iron powder track capture plate 2, and a clip slot that fits with the slide bar 8 is opened at the bottom of the clip bar 9, and the side wall of the clip 9 is A threaded hole is provided at a position corresponding to the card slot, and the card bar 9 is fixed on the slide bar 8 by screws. When a parabolic demonstration is required, the iron powder track capture board 2 can be clamped on the clip 9 through the card slot, and then fixed with screws; after the demonstration is completed, remove the screws, disassemble the iron powder track capture board 2 and put it in the storage box for storage. . The physical parabola teaching aid is easy to disassemble and assemble, easy to store, and saves space.

The slider 8 is installed with a slider 10, the bottom of the slider 10 is provided with a slot that fits with the slider 8, the vertical support rod 3 is fixed on the top of the slider 10, and the slider 10 is installed on the slider 8 by tightening the bolt 11. superior. The vertical support rod 3 is fixed on the slider 8 through the slider 10 and the tightening bolt 11, which is convenient for the installation and storage of the vertical support rod 3; Immediately after the ball 5 leaves the ejection device, the iron powder in the iron powder track capture plate 2 is adsorbed to generate a motion track, which is convenient for students to analyze a complete parabolic motion track of the magnetic ball 5 .

A sleeve 12 is installed on the vertical support rod 3 , the outer wall of the sleeve 12 is provided with two tightening bolts 13 that can fix the sleeve 12 on the vertical support rod 3 , and the hinge piece 4 is installed on the outer wall of the sleeve 12 . The relative height of the ejection device can be adjusted through the sleeve 12 and the tightening bolt 2 13 to ensure that the position of the highest point of the magnetic ball 5 in each test can be displayed on the iron powder track capture plate 2, which is convenient for students to analyze. At the same time, the sleeve 12 is used in conjunction with the slider 10 to adjust the position of the ejection opening of the ejection device, so that the magnetic ball 5 enters the area of the iron powder track capture plate 2 immediately after leaving the ejection device.

1-5, a pointer 14 is provided on the hinge piece 4, a scale is provided on the hinge head 6 at the position corresponding to the pointer 14, and the scale on the hinge head 6 corresponds to the inclination angle of the ejection device. The inclination angle of the ejection cylinder 15 can be visually displayed by the pointer 14 and the scale, which is convenient for students to observe and compare the difference in the motion trajectories of the magnetic ball 5 ejected from different angles.

The ejection device includes an ejection cylinder 15, and the bottom of the ejection cylinder 15 is fixedly connected with the hinge joint 6; the ejection cylinder 15 is provided with an anti-collision head 16, and a spring 17 is arranged between the collision head 16 and the bottom of the ejection cylinder 15; the ejection cylinder 15 A guide groove 18 along the axial direction is provided on the side wall of the ram head 16, a positioning rod 19 is installed on the side wall of the impact head 16, the positioning rod 19 extends from the guide groove 18 to the outer wall of the ejection cylinder 15, and the edge of the guide groove 18 is provided with Positioning notch 20 in which the rod 19 is stuck. During the test, the impact head 16 can be moved to the bottom of the ejection cylinder 15 by hand, so that the impact head 16 compresses the spring 17 and the positioning rod 19 is stuck in the positioning gap 20, and then the magnetic ball 5 is stuck in the inner cavity of the ejection cylinder 15. Middle (the area where the magnetic ball 5 is installed can be provided with a rubber constriction, to ensure that the magnetic ball 5 can be ejected, and at the same time, the magnetic ball 5 can be stuck in the ejection cylinder 15 before being hit, and the magnetic ball will not be inclined downward due to the angle. 5 slides out from the ejection cylinder 15.); then the positioning rod 19 is toggled so that the positioning rod 19 slides out from the positioning gap 20, and the impact head 16 is driven to hit the magnetic ball 5 under the elastic force of the spring 17, and the magnetic ball 5 is ejected from the magnetic ball 5. The cartridge 15 is ejected. There are multiple positioning notches 20 in this embodiment, and the plurality of positioning notches 20 are evenly distributed along the edge of the guide groove 18 . The magnetic ball 5 can have different ejection speeds by clipping the positioning rod 19 in different positioning notches 20 and then pulling it out, so that the magnetic ball 5 can have different ejection speeds, which is convenient for students to understand the parabolic trajectory at different speeds.

The above is the embodiment of the present invention. The above-mentioned embodiments and the specific parameters in the examples are only for the purpose of clearly expressing the verification process of the utility model, and are not intended to limit the scope of the patent protection of the present utility model. Equivalent structural changes made in the description and the accompanying drawings of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. A physical parabola teaching aid, comprising a bottom plate (1), characterized in that: an iron powder track capture plate (2) and a vertical support rod (3) are installed on the upper surface of the bottom plate (1), the iron powder Both the track capture plate (2) and the vertical support rod (3) are perpendicular to the upper surface of the bottom plate (1), and the vertical support rod (3) and the iron powder track capture plate (2) are located on the same plane A hinged piece (4) is installed on the vertical support rod (3), and an ejection device capable of ejecting a magnetic ball (5) is hinged on the hinged piece (4); the tail of the ejection device is provided with a hinged connection The hinge piece (4) is fitted with a hinged head (6), the hinged sheet (4) and the hinged head (6) are both provided with corresponding sockets, and bolts are inserted in the sockets, and one end of the bolts is installed with an adjustable socket. Tighten the nut(7) to fix the hinge piece(4) and the hinge head(6). 2. The physical parabola teaching aid according to claim 1, characterized in that: a slider (8) is fixed on the bottom plate (1), and a clip (8) is fixed on the bottom of the iron powder track capture plate (2). 9), the bottom of the clamping strip (9) is provided with a clamping slot that fits with the slider (8), the side wall of the clamping strip (9) is provided with a threaded hole at the position corresponding to the clamping slot, and the clamping strip (9). 9) Fix it on the slider (8) with screws. 3. The physical parabola teaching aid according to claim 2, characterized in that: the slider (8) is provided with a slider (10), and the slider (10) is provided with a slider (8) at the bottom. In the matching slot, the vertical support rod (3) is fixed on the top of the slider (10), and the slider (10) is installed on the slider (8) by tightening the first bolt (11). 4. The physical parabola teaching aid according to claim 1, characterized in that: a sleeve (12) is installed on the vertical support rod (3), and the outer wall of the sleeve (12) is provided with a sleeve that can hold the sleeve (12). (12) Two tightening bolts (13) fixed on the vertical support rod (3), the hinge piece (4) is mounted on the outer wall of the sleeve (12). 5. The physical parabola teaching aid according to any one of claims 1-4, characterized in that: a pointer (14) is provided on the hinge piece (4), and a pointer (14) is provided on the hinge head (6) ) corresponding positions are provided with scales, and the scales on the hinge head (6) correspond to the inclination angle of the ejection device. 6. The physical parabola teaching aid according to claim 5, characterized in that: the ejection device comprises an ejection cylinder (15), and the bottom of the ejection cylinder (15) is fixedly connected with the hinge joint (6); the ejection An opposite impact head (16) is arranged in the barrel (15), and a spring (17) is arranged between the impact head (16) and the bottom of the ejection barrel (15); the side of the ejection barrel (15) is provided with a spring (17). The wall is provided with a guide groove (18) along the axial direction, and a positioning rod (19) is installed on the side wall of the impact head (16), and the positioning rod (19) extends from the guide groove (18) to the ejection barrel (19). 15), the edge of the guide groove (18) is provided with a positioning notch (20) that can clamp the positioning rod (19). 7 . The physical parabola teaching aid according to claim 6 , wherein there are multiple positioning notches ( 20 ), and the plurality of positioning notches ( 20 ) are evenly distributed along the edge of the guide groove ( 18 ). 8 .

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