CN212084465U

CN212084465U - Physics parabola teaching aid

Info

Publication number: CN212084465U
Application number: CN202020318765.0U
Authority: CN
Inventors: 杨敏
Original assignee: Guizhou Education University
Current assignee: Guizhou Education University
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-04
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the technical field of teaching equipment, and discloses a physical parabola teaching aid, which comprises a bottom plate, wherein an iron powder track catching plate and a vertical supporting rod are arranged on the upper surface of the bottom plate, and the vertical supporting rod and the magnetic track catching plate are positioned in the same vertical plane; the vertical supporting rod is provided with a hinged sheet, and the hinged sheet is hinged with an ejection device capable of ejecting the magnetic ball; the tail of the ejection device is provided with a hinge joint matched with the hinge piece, the hinge piece and the hinge joint are provided with corresponding jacks, bolts are inserted into the jacks, and one end of each bolt is provided with a screwing nut capable of fixing the hinge piece and the hinge joint. The utility model discloses install the jettison device of magnetic ball on vertical support bar's articulated piece through the hinge, at the in-process of carrying out physics parabola teaching, adjustment jettison device that can the multi-angle for the magnetic ball can follow the angle of difference and jet out and draw out the movement track of magnetic ball on the iron powder orbit catches the board, and the teacher of being convenient for imparts knowledge to students and operates, also is favorable to the student to understand.

Description

Physics parabola teaching aid

Technical Field

The utility model belongs to the technical field of the teaching equipment, concretely relates to physics parabola teaching aid.

Background

After the object is thrown out at a certain speed, the motion track of the object is a parabola. In the physical teaching process, a parabola demonstration teaching aid is needed, but the existing parabola demonstration teaching aid has single function and can only perform simple parabola demonstration, for example, the parabola can only be thrown out at a certain horizontal initial speed, the horizontal throwing motion trail of an object can be demonstrated, and the motion trail of the object thrown out along various angles can not be demonstrated according to the requirement; and the teacher often imparts knowledge to students through drawing the parabola on the blackboard by hand or demonstrating the parabola on a computer, which is not beneficial to students to understand and influences the teaching quality.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model provides a physics parabola teaching aid installs the jettison device of magnetic ball on vertical support bar's articulated piece through the hinge, is carrying out physics parabola teaching in-process, adjustment jettison device that can the multi-angle for the magnetic ball can follow the angle of difference and jet out and draw the motion trail of magnetic ball on iron powder orbit catching plate, and the teacher's teaching operation of being convenient for also is favorable to the student to understand.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a physical parabola teaching aid comprises a bottom plate, wherein an iron powder track capturing plate and a vertical supporting rod are arranged on the upper surface of the bottom plate, the iron powder track capturing plate and the vertical supporting rod are perpendicular to the upper surface of the bottom plate, and the vertical supporting rod and the iron powder track capturing plate are located in the same plane; the vertical supporting rod is provided with a hinged sheet, and the hinged sheet is hinged with an ejection device capable of ejecting the magnetic ball; the tail of the ejection device is provided with a hinge joint matched with the hinge piece, the hinge piece and the hinge joint are provided with corresponding jacks, bolts are inserted into the jacks, and one end of each bolt is provided with a screwing nut capable of fixing the hinge piece and the hinge joint.

Furthermore, a sliding strip is fixed on the bottom plate, a clamping strip is fixed at the bottom of the iron powder track capturing plate, a clamping groove matched with the sliding strip is formed in the bottom of the clamping strip, a threaded hole is formed in the position, corresponding to the clamping groove, of the side wall of the clamping strip, and the clamping strip is fixed on the sliding strip through a screw.

Further, the slider is installed to the draw runner, and the draw-in groove that agrees with mutually with the draw runner is seted up to the slider bottom, and vertical support rod fixes at the slider top, and the slider is installed on the draw runner through screwing up bolt one.

Further, install the sleeve on the vertical support pole, the sleeve outer wall is provided with can fix the tightening bolt two on the vertical support pole with the sleeve, and articulated piece is installed at telescopic outer wall.

Furthermore, a pointer is arranged on the hinge piece, scales are arranged on the hinge head at the position corresponding to the pointer, and the scales on the hinge head correspond to the inclination angle of the ejection device.

Furthermore, the ejection device comprises an ejection barrel, and the bottom of the ejection barrel is fixedly connected with the hinge joint; the shooting barrel is internally provided with an impact head, and a spring is arranged between the impact head and the bottom of the shooting barrel; the lateral wall of a shooting barrel is provided with a guide groove along the axial direction, the lateral wall of the impact head is provided with a positioning rod, the positioning rod extends out of the outer wall of the shooting barrel through the guide groove, and the edge of the guide groove is provided with a positioning notch capable of clamping the positioning rod.

Furthermore, the positioning notches are multiple and are uniformly distributed along the edge of the guide groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses install the jettison device of magnetic ball on vertical support bar's articulated piece through the hinge, at the in-process of carrying out physics parabola teaching, adjustment jettison device that can the multi-angle for the magnetic ball can follow the angle of difference and jet out and draw out the movement track of magnetic ball on the iron powder orbit catches the board, and the teacher of being convenient for imparts knowledge to students and operates, also is favorable to the student to understand.

Drawings

FIG. 1 is a schematic structural diagram of a physical parabola teaching aid in the embodiment;

FIG. 2 is a schematic view showing the connection of the hinge plate, the hinge head and the ejector in the embodiment;

FIG. 3 is a schematic connection diagram of the bottom plate, the slide bar, the clip bar and the iron powder track catching plate in the embodiment;

FIG. 4 is an enlarged schematic view of detail A of FIG. 1;

fig. 5 is a schematic perspective view of an ejection cylinder in the ejection device in the embodiment;

wherein: 1. a base plate; 2. an iron powder track catching plate; 3. a vertical support bar; 4. a hinged sheet; 5. a magnetic ball; 6. a hinge joint; 7. screwing down the nut; 8. a slide bar; 9. clamping the strip; 10. a slider; 11. screwing the first bolt; 12. a sleeve; 13. screwing a second bolt; 14. a pointer; 15. a shooting barrel; 16. a striking head; 17. a spring; 18. a guide groove; 19. positioning a rod; 20. and positioning the notch.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example (b):

referring to fig. 1 and 2, a physical parabola teaching aid comprises a bottom plate 1, wherein an iron powder track capture plate 2 and a vertical support rod 3 are mounted on the upper surface of the bottom plate 1, 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, and the vertical support rod 3 and the iron powder track capture plate 2 are located in the same plane; the vertical supporting rod 3 is provided with a hinged sheet 4, and the hinged sheet 4 is hinged with an ejection device capable of ejecting the magnetic ball 5; the tail of the ejection device is provided with a hinge head 6 matched with the hinge piece 4, the hinge piece 4 and the hinge head 6 are respectively provided with a corresponding jack, a bolt is inserted into the jack, and one end of the bolt is provided with a tightening nut 7 capable of fixing the hinge piece 4 and the hinge head 6.

The iron powder track catching plate 2 is formed by clamping a plurality of densely arranged white polygonal prisms between two layers of plates, iron powder is filled in a gap between every two adjacent prisms, the bottom surface of the iron powder track catching plate is a magnetic strip, when the magnetic strip is moved, the iron powder is completely absorbed to the bottom, and the upper layer of plate is made of transparent materials; when the magnetic pen is stroked on the transparent layer plate, iron powder is attracted to the transparent layer plate along the path, so that the path passed by the magnetic pen is displayed. If the back surface is swept by the magnetic strip, the iron powder is sucked into the gaps among the prisms again, and the erasure of the display traces is realized. In this embodiment, the magnetic balls 5 are first installed in the catapult so that the magnetic balls 5 in the catapult face the iron powder track capture plate 2 and the magnetic balls 5 just pass the surface of the iron powder track capture plate 2. After the catapult is started, the magnetic ball 5 is ejected from the catapult to perform parabola motion, and the magnetic ball 5 can generate adsorption action on iron powder at a position corresponding to the iron powder track capture plate 2 in the motion process, so that the motion track of the magnetic ball 5 is displayed on the iron powder track capture plate 2. Because of the jettison device is articulated mutually through articulated joint 6 with the articulated joint 6 of fixing on vertical support rod 3, can be through unscrewing screw nut 7 before experimental, then adjust jettison device's ejection angle, can make magnetic ball 5 shoot out and draw the motion trail of corresponding magnetic ball 5 on iron powder orbit capture plate 2 from the angle of difference, the teacher's of being convenient for teaching operation also is favorable to the student to understand.

Referring to fig. 1-3, a slide bar 8 is fixed on a bottom plate 1, a clamping bar 9 is fixed at the bottom of an iron powder track capture plate 2, a clamping groove matched with the slide bar 8 is formed at the bottom of the clamping bar 9, a threaded hole is formed in the side wall of the clamping bar 9 at a position corresponding to the clamping groove, and the clamping bar 9 is fixed on the slide bar 8 through a screw. When the parabola demonstration is needed, the iron powder track catching plate 2 can be clamped on the clamping strip 9 through the clamping groove and then fixed through the screw; and taking down the screw after the demonstration is finished, and detaching the iron powder track capture plate 2 and putting the iron powder track capture plate into a storage box for storage. This physics parabola teaching aid easy dismounting, the space is saved to convenient storage.

The slider 10 is installed to the draw runner 8, and the draw-in groove that agrees with draw runner 8 is seted up to slider 10 bottom, and vertical support rod 3 is fixed at slider 10 top, and the slider 10 is installed on draw runner 8 through tightening bolt 11. The vertical support rod 3 is fixed on the slide bar 8 through a slide block 10 and a first tightening bolt 11, so that the vertical support rod 3 can be conveniently installed and stored; meanwhile, the position of the ejection device relative to the iron powder track capture plate 2 can be adjusted, so that the iron powder in the iron powder track capture plate 2 is immediately adsorbed after the magnetic ball 5 is just separated from the ejection device, a motion track is generated, and a student can conveniently analyze a complete parabolic motion track of the magnetic ball 5.

The sleeve 12 is installed on the vertical support rod 3, the second tightening bolt 13 capable of fixing the sleeve 12 on the vertical support rod 3 is arranged on the outer wall of the sleeve 12, 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 second tightening bolt 13, so that the highest point of the magnetic ball 5 in each test can be displayed through the iron powder track capture plate 2, and the analysis of students is facilitated. Meanwhile, the sleeve 12 and the slide block 10 are used for jointly adjusting the position of the launching port of the catapult, so that the magnetic ball 5 immediately enters the area of the iron powder track capture plate 2 after leaving the catapult.

Referring to fig. 1-5, a pointer 14 is arranged on the hinge plate 4, a scale is arranged on the hinge head 6 at a 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 barrel 15 can be visually displayed through the pointer 14 and the scales, so that students can conveniently observe and compare the difference of the motion tracks of the ejection magnetic balls 5 at different angles.

The ejection device comprises an ejection barrel 15, and the bottom of the ejection barrel 15 is fixedly connected with the hinge joint 6; an impact head 16 is arranged in the ejection barrel 15, and a spring 17 is arranged between the impact head 16 and the bottom of the ejection barrel 15; the side wall of the shooting barrel 15 is provided with an axial guide groove 18, the side wall of the impact head 16 is provided with a positioning rod 19, the positioning rod 19 extends out of the guide groove 18 to the outer wall of the shooting barrel 15, and the edge of the guide groove 18 is provided with a positioning notch 20 capable of clamping the positioning rod 19. During the test, the impact head 16 can be moved towards the bottom of the ejection barrel 15 by hand, so that the impact head 16 compresses the spring 17 and the positioning rod 19 is clamped in the positioning notch 20, and then the magnetic ball 5 is clamped in the inner cavity of the ejection barrel 15 (a rubber necking can be arranged in the area where the magnetic ball 5 is arranged, so that the magnetic ball 5 can be ejected, and meanwhile, the magnetic ball 5 can be clamped in the ejection barrel 15 before being impacted, and the magnetic ball 5 cannot slide out of the ejection barrel 15 due to the downward inclination of the angle); then the positioning rod 19 is shifted, the positioning rod 19 slides out of the positioning notch 20, the impact head 16 is driven to impact the magnetic ball 5 under the elastic force of the spring 17, and the magnetic ball 5 is ejected from the ejection barrel 15. The positioning notches 20 in this embodiment are provided in plurality, and the plurality of positioning notches 20 are evenly distributed along the edge of the guide groove 18. The positioning rod 19 can be clamped in different positioning notches 20 and then pulled out to generate different impact forces, so that the magnetic ball 5 can have different ejection speeds, and students can conveniently understand parabolic motion tracks at different speeds.

The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a physics parabola teaching aid, includes bottom plate (1), its characterized in that: an iron powder track capturing plate (2) and a vertical supporting rod (3) are mounted on the upper surface of the bottom plate (1), the iron powder track capturing plate (2) and the vertical supporting rod (3) are perpendicular to the upper surface of the bottom plate (1), and the vertical supporting rod (3) and the iron powder track capturing plate (2) are located in the same plane; the vertical supporting rod (3) is provided with a hinged sheet (4), and the hinged sheet (4) is hinged with an ejection device capable of ejecting a magnetic ball (5); the ejection device afterbody is provided with articulated head (6) that agree with articulated piece (4), all be provided with corresponding jack on articulated piece (4) and articulated head (6), the jack interpolation is equipped with the bolt, and bolt one end is installed and is screwed up nut (7) that can fix articulated piece (4) and articulated head (6).

2. A physics parabola teaching aid as claimed in claim 1, wherein: the iron powder track capture plate is characterized in that a sliding strip (8) is fixed on the bottom plate (1), a clamping strip (9) is fixed at the bottom of the iron powder track capture plate (2), a clamping groove matched with the sliding strip (8) is formed in the bottom of the clamping strip (9), a threaded hole is formed in the position, corresponding to the clamping groove, of the side wall of the clamping strip (9), and the clamping strip (9) is fixed on the sliding strip (8) through screws.

3. A physics parabola teaching aid as claimed in claim 2, wherein: slider (10) are installed in draw runner (8), the draw-in groove that agrees with draw runner (8) mutually is seted up to slider (10) bottom, vertical support rod (3) are fixed at slider (10) top, slider (10) are installed on draw runner (8) through screwing up bolt (11).

4. A physics parabola teaching aid as claimed in claim 1, wherein: install sleeve (12) on vertical support pole (3), sleeve (12) outer wall is provided with and can fixes screwing up bolt two (13) on vertical support pole (3) with sleeve (12), the outer wall at sleeve (12) is installed in articulated piece (4).

5. A physics parabola teaching aid as claimed in any one of claims 1-4, wherein: be provided with pointer (14) on articulated piece (4), the position that corresponds at pointer (14) is provided with the scale on articulated head (6), the scale on articulated head (6) corresponds with ejection device's inclination.

6. A physics parabola teaching aid as claimed in claim 5, wherein: the ejection device comprises an ejection barrel (15), and the bottom of the ejection barrel (15) is fixedly connected with the hinge joint (6); a collision head (16) is arranged in the ejection barrel (15), and a spring (17) is arranged between the collision head (16) and the bottom of the ejection barrel (15); the side wall of the ejection barrel (15) is provided with an axial guide groove (18), the side wall of the impact head (16) is provided with a positioning rod (19), the positioning rod (19) extends out of the guide groove (18) to the outer wall of the ejection barrel (15), and the edge of the guide groove (18) is provided with a positioning notch (20) capable of clamping the positioning rod (19).

7. A physics parabola teaching aid as claimed in claim 6, wherein: the positioning notches (20) are multiple, and the positioning notches (20) are uniformly distributed along the edge of the guide groove (18).