High school physics oblique projectile motion demonstration device

Abstract

The utility model discloses a high school physics oblique projectile motion demonstration device comprising a demonstration box, an observation plate is fixedly connected on the front side wall of the demonstration box, the observation plate is made of a transparent glass material, a side door is rotatably connected on the left side wall of the demonstration box, a demonstration ball is arranged in the demonstration box, and the side door is made of a transparent glass material. The inner bottom surface of the demonstration box is fixedly connected with an inclined plate. Through the structure, the demonstration ball is placed in the demonstration box, the pull rope is pulled to enable the striking plate to strike the demonstration ball, the demonstration ball does parabolic motion in the demonstration box, students observe through the observation plate, the falling demonstration ball returns to the original position under the action of the inclined plate and can be fired again, and the firing angle can be changed to present parabolas in different shapes. The demonstration balls with different masses can be replaced for demonstration, the demonstration content and the teaching content are greatly enriched, the same demonstration can be repeated for multiple times, observation is more convenient, and the device is simple in overall structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the field of physical motion demonstration devices, in particular to a high school physics oblique projectile motion demonstration device. Background Art

[0002] The progress of science is inseparable from human exploration. The root of human exploration is based on the amount of knowledge. The basic channel for acquiring knowledge is classroom teaching. In physics teaching, experimental teaching is particularly important. It can not only attract students' interest in learning and improve the quality of teaching, but also stimulate students' imagination through actual demonstrations. It can be said to kill two birds with one stone. Therefore, demonstration devices are needed.

[0003] In existing high school physics teaching, when demonstrating oblique projectile motion, the teacher usually holds a small ball and throws it obliquely indoors. This is not convenient for demonstration, and the demonstration ball will run around and is inconvenient to recover. Utility Model Content

[0004] The purpose of the utility model is to provide a high school physics oblique projectile motion demonstration device, a demonstration ball is placed in a demonstration box, a pull rope is pulled to make a striking plate hit the demonstration ball, the demonstration ball performs parabolic motion in the demonstration box, students observe through an observation board, the fallen demonstration ball returns to its original position under the action of the inclined plate and can be fired again, the firing angle can also be changed to present parabolas of different shapes, demonstration balls of different masses can also be replaced for demonstration, which greatly enriches the demonstration content and teaching content, the same demonstration can be repeated many times, observation is more convenient, the overall structure of the device is simple, and the operation is convenient.

[0005] In order to achieve the above-mentioned purpose, a high school physics oblique projectile motion demonstration device is provided, comprising: a demonstration box, an observation plate is fixedly connected to the front side wall of the demonstration box, the observation plate is made of transparent glass, a side door is rotatably connected to the left side wall of the demonstration box, a demonstration ball is arranged inside the demonstration box, an oblique plate is fixedly connected to the inner bottom surface of the demonstration box, a bottom groove is arranged at the lower left corner of the demonstration box, a firing box is fixedly connected to the lower left corner of the demonstration box, a top groove is arranged at the top of the firing box, a wire groove is arranged at the bottom of the firing box, and a wire groove is arranged on the inner rear side wall of the firing box. A rear groove is provided, and a front groove is provided on the front side wall of the firing box, and the rear groove and the front groove are both arc-shaped, and a bottom plate is provided inside the firing box, and connecting shafts are fixedly connected to the front and rear side walls of the bottom plate, and the number of the connecting shafts is set to two, and the front connecting shaft is located inside the front groove, and a fastening ring is threadedly connected on the circumferential surface of the connecting shaft, and an inner column and a spring are fixedly connected to the top of the bottom plate, and the inner column is located inside the spring, and a striking plate is fixedly connected to the top of the spring, and a jacket and a pull rope are fixedly connected to the bottom of the striking plate, and the pull rope is located inside the spring.

[0006] According to the high school physics oblique projectile motion demonstration device, a slider is fixedly connected to the rear side wall of the demonstration box, and an installation track is slidingly arranged on the outer side of the slider. There are two sliders and two installation tracks, and they are symmetrically distributed at the rear of the demonstration box.

[0007] According to the high school physics oblique projectile motion demonstration device, the demonstration ball is located above the bottom groove, the bottom groove is located above the top groove, and the striking plate is located below the demonstration ball.

[0008] According to the high school physics oblique projectile motion demonstration device, the bottom of the pull rope passes through the inner column and the bottom plate, and the bottom of the pull rope is located inside the wire groove.

[0009] According to the high school physics oblique projectile motion demonstration device, the base plate is slidably connected to the firing box through a connecting shaft, a rear groove and a front groove.

[0010] According to the high school physics oblique projectile motion demonstration device, the rear groove and the front groove are located on the same horizontal line as the center of the demonstration ball.

[0011] The above scheme has the beneficial effects: by arranging a demonstration box, an observation board, a side door, a demonstration ball, an inclined board, a bottom groove, a firing box, a top groove, a wire groove, a rear groove, a front groove, a bottom board, a connecting shaft, a fastening ring, an inner column, a spring, a striking board, a jacket and a pull rope, the demonstration ball is placed in the demonstration box, and the pull rope is pulled to make the striking board hit the demonstration ball. The demonstration ball moves in a parabola in the demonstration box. Students observe through the observation board that the fallen demonstration ball returns to its original position under the action of the inclined board and can be fired again. The firing angle can also be changed to present parabolas of different shapes. Demonstration balls of different masses can also be replaced for demonstration, which greatly enriches the demonstration content and teaching content. The same demonstration can be repeated many times, which is more convenient for observation. The overall structure of the device is simple and easy to operate.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is the main diagram of a high school physics oblique projectile motion demonstration device of the utility model;

[0015] Figure 2 This is a diagram showing the internal structure of a demonstration box of a high school physics oblique projectile motion demonstration device of the utility model;

[0016] Figure 3This is a structural diagram of a firing box of a high school physics oblique projectile motion demonstration device of the utility model;

[0017] Figure 4 It is a cross-sectional view of a firing box of a high school physics oblique projectile motion demonstration device of the utility model;

[0018] Figure 5 The utility model is a cross-sectional view of a striking plate of a high school physics oblique projectile motion demonstration device.

[0019] Legend:

[0020] 1. Demonstration box; 2. Observation board; 3. Side door; 4. Demonstration ball; 5. Inclined board; 6. Bottom slot; 7. Firing box; 8. Top slot; 9. Wire slot; 10. Rear slot; 11. Front slot; 12. Bottom plate; 13. Connecting shaft; 14. Fastening ring; 15. Inner column; 16. Spring; 17. Strike plate; 18. Jacket; 19. Pull rope; 20. Slider; 21. Mounting track. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-5The utility model embodiment is a high school physics oblique projectile motion demonstration device, which includes: a demonstration box 1, an observation plate 2 is fixedly connected to the front side wall of the demonstration box 1, and the observation plate 2 is made of transparent glass. A side door 3 is rotatably connected to the left side wall of the demonstration box 1 to facilitate the replacement of the internal demonstration ball 4. The demonstration box 1 is provided with a demonstration ball 4 inside, and an inclined plate 5 is fixedly connected to the inner bottom surface of the demonstration box 1, so that the demonstration ball 4 can eventually fall back to the bottom groove 6. The bottom left corner of the demonstration box 1 is provided with a bottom groove 6. The demonstration box 1 is fixedly connected with a firing box 7 at the lower left corner, a top groove 8 is provided on the top of the firing box 7, a wire groove 9 is provided on the bottom of the firing box 7, a rear groove 10 is provided on the inner rear side wall of the firing box 7, and a front groove 11 is provided on the front side wall of the firing box 7. The rear groove 10 and the front groove 11 are both arc-shaped, and the rear groove 10 and the front groove 11 are located on the same horizontal line as the center of the demonstration ball 4, so as to facilitate the angle rotation of the striking plate 17 to form different parabolas. The firing box 7 is provided with a bottom plate 12 inside, and the bottom plate 12 is provided with a bottom plate 12. The front and rear side walls are fixedly connected with a connecting shaft 13, and the number of the connecting shafts 13 is set to two. The front connecting shaft 13 is located inside the front groove 11. The bottom plate 12 is slidably connected to the firing box 7 through the connecting shaft 13, the rear groove 10 and the front groove 11. A fastening ring 14 is threadedly connected to the circumferential surface of the connecting shaft 13. When the sliding connecting shaft 13 changes the firing angle, it can be fixed by tightening the fastening ring 14, so that multiple demonstrations at the same angle can be performed. The top of the bottom plate 12 is fixedly connected with an inner column 15 and a spring 16. The inner column 15 is located inside the spring 16, the top of the spring 16 is fixedly connected with a striking plate 17, the bottom of the striking plate 17 is fixedly connected with a jacket 18 and a pull rope 19, the pull rope 19 is located inside the spring 16, the bottom of the pull rope 19 passes through the inner column 15 and the bottom plate 12, the bottom of the pull rope 19 is located inside the wire groove 9, the pull rope 19 is pulled to make the striking plate 17 retract downward, after the pull rope 19 is released, the striking plate 17 hits the demonstration ball 4 under the action of the spring 16, so that the demonstration ball 4 performs an oblique throwing motion in the demonstration box 1.

[0023] The demonstration ball 4 is located above the bottom groove 6 , the bottom groove 6 is located above the top groove 8 , and the striking plate 17 is located below the demonstration ball 4 .

[0024] A slider 20 is fixedly connected to the rear side wall of the demonstration box 1, and a mounting track 21 is slidably arranged on the outer side of the slider 20. There are two sliders 20 and two mounting tracks 21, which are symmetrically distributed at the rear of the demonstration box 1, so that the demonstration box 1 can be mounted on a wall.

[0025] Working principle: install the mounting track 21 on the wall by bolts, then slide the slider 20 into the mounting track 21 to fix the device, pull the pull rope 19 to retract the striking plate 17 downward, and after loosening the pull rope 19, the striking plate 17 hits the demonstration ball 4 under the action of the spring 16, so that the demonstration ball 4 performs oblique throwing motion in the demonstration box 1, and the students can observe through the observation board 2. When demonstrations at different angles are required, loosen the fastening ring 14, slide the connecting shaft 13 between the rear groove 10 and the front groove 11, and then tighten the fastening ring 14 to fix the bottom plate 12. The striking plate 17 changes the firing angle, and then pull the pull rope 19 to demonstrate. At the same time, the side door 3 can be opened to replace the internal demonstration ball 4 to enrich the demonstration content.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high school physics oblique projectile motion demonstration device, characterized in that: include: A demonstration box (1), wherein an observation panel (2) is fixedly connected to the front side wall of the demonstration box (1), wherein the observation panel (2) is made of transparent glass, a side door (3) is rotatably connected to the left side wall of the demonstration box (1), a demonstration ball (4) is arranged inside the demonstration box (1), an inclined plate (5) is fixedly connected to the inner bottom surface of the demonstration box (1), a bottom groove (6) is arranged at the lower left corner of the demonstration box (1), a firing box (7) is fixedly connected to the lower left corner of the demonstration box (1), a top groove (8) is arranged at the top of the firing box (7), a wire groove (9) is arranged at the bottom of the firing box (7), a rear groove (10) is arranged on the inner rear side wall of the firing box (7), a front groove (11) is arranged on the front side wall of the firing box (7), and the rear groove (11) is arranged on the inner rear side wall of the firing box (7). (10) and the front groove (11) are both arc-shaped, and a bottom plate (12) is arranged inside the firing box (7), and a connecting shaft (13) is fixedly connected to the front and rear side walls of the bottom plate (12), and the number of the connecting shafts (13) is set to two, and the front connecting shaft (13) is located inside the front groove (11), and a fastening ring (14) is threadedly connected on the circumferential surface of the connecting shaft (13), and the top of the bottom plate (12) is fixedly connected with an inner column (15) and a spring (16), and the inner column (15) is located inside the spring (16), and the top of the spring (16) is fixedly connected with a striking plate (17), and the bottom of the striking plate (17) is fixedly connected with a jacket (18) and a pull rope (19), and the pull rope (19) is located inside the spring (16).

2. A high school physics oblique projectile motion demonstration device according to claim 1, characterized in that: A slider (20) is fixedly connected to the rear side wall of the demonstration box (1), and a mounting track (21) is slidably arranged on the outer side of the slider (20). There are two sliders (20) and two mounting tracks (21), which are symmetrically distributed at the rear of the demonstration box (1).

3. A high school physics oblique projectile motion demonstration device according to claim 1, characterized in that: The demonstration ball (4) is located above the bottom groove (6), the bottom groove (6) is located above the top groove (8), and the striking plate (17) is located below the demonstration ball (4).

4. A high school physics oblique projectile motion demonstration device according to claim 1, characterized in that: The bottom of the pull rope (19) passes through the inner column (15) and the bottom plate (12), and the bottom of the pull rope (19) is located inside the wire groove (9).

5. A high school physics oblique projectile motion demonstration device according to claim 1, characterized in that: The bottom plate (12) is slidably connected to the firing box (7) via a connecting shaft (13), a rear groove (10) and a front groove (11).

6. A high school physics oblique projectile motion demonstration device according to claim 1, characterized in that: The rear groove (10) and the front groove (11) are located on the same horizontal line as the center of the demonstration ball (4).

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