Gravity demonstration platform for physical experiment

Abstract

The utility model discloses a gravity demonstration platform for a physical experiment. The gravity demonstration platform comprises a bottom plate, a sand tank is arranged on the bottom plate, side plates are arranged on the two sides of the sand tank, a vertical plate is arranged on the bottom plate, an open groove is formed in one side of the vertical plate, a lifting demonstration device is arranged in the vertical plate, and a sand scraping device is arranged in each side plate in a sliding mode. The utility model belongs to the technical field of physical experiment demonstration, and particularly relates to a gravity demonstration platform for a physical experiment, which can solve the problems that a physical gravity parabola experiment is inconvenient to demonstrate at different heights and inconvenient to demonstrate at different speeds when a small ball is subjected to a physical gravity parabola experiment in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of physical experiment demonstration, in particular to a gravity demonstration platform for physical experiments. Background Art

[0002] In physics teaching, it is often necessary to combine physical knowledge with experiments to further enhance students' interest in learning physics. Experiments in the field of physical gravity include gravitational parabolic motion.

[0003] In order to intuitively demonstrate the parabolic motion trajectory of an object, in the prior art, physics teachers often place a small ball on a platform and push the small ball, causing it to fall in a parabola, to demonstrate the parabolic motion of the object under gravity. However, there are shortcomings: it is not convenient to know the parabolic motion of the ball at different speeds, and it is not convenient to know the parabolic motion of the ball at different heights. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve the problem that the traditional gravity demonstration platform for physical experiments is inconvenient to demonstrate at different heights and at different speeds when conducting physical gravity parabola experiments on a small ball.

[0005] In order to realize the above functions, the technical scheme adopted by the utility model is as follows: a gravity demonstration platform for physical experiments, comprising a bottom plate, a sand trough is provided on the bottom plate, side plates are provided on both sides of the sand trough, a vertical plate is provided on the bottom plate, a slot is provided on one side of the vertical plate, a lifting demonstration device is provided in the vertical plate, and a sand scraping device is slidably provided in the side plate; the lifting demonstration device comprises a screw rod 1, the screw rod 1 is rotatably arranged in the vertical plate, a hand wheel is provided on the top of the screw rod 1, a connecting plate is slidably provided in the slot, the connecting plate is threadedly connected to the screw rod 1, a slide is provided at the outer end of the connecting plate, a placement groove is provided on the slide, a small ball is stored in the placement groove, a transparent window is provided on one side of the slide, and a scale 2 is provided on the transparent window, the slide is driven to rise and fall by the connecting plate, so that the height of the small ball sliding out of the slide can be adjusted, so that the small ball can be demonstrated to perform demonstration experiments at different heights, and the height of the small ball placed in the slide can be adjusted by the scale 2, so that the speed of the small ball sliding out of the slide can be adjusted.

[0006] Furthermore, the sand scraping device includes a cross beam, which slides in the side plate, a hollow cylinder is provided at the lower end of the cross beam, a wire cylinder is rotatably provided in the hollow cylinder, a screw rod 2 is threadedly connected in the wire cylinder, a scraper is provided at the lower end of the screw rod 2, a guide rod is provided at the lower end of the cross beam, a guide cylinder is provided at the upper end of the scraper, the guide rod is inserted and slid in the guide cylinder, and the sand in the sand trough can be scraped flat by the scraper, so that the position where the ball falls to the ground can be clearly seen.

[0007] Preferably, the vertical plate is provided with a scale one, and the upper end of the sand trough is provided with a scale three, through which the height of the slide can be known, and the position where the ball lands can be accurately known through the scale three.

[0008] Preferably, an end plate is provided at the upper end of the guide cylinder, and the end plate can prevent the guide rod from detaching from the guide cylinder.

[0009] Preferably, the sand trough is aligned with the slide, and the interior of the slide is arranged in an arc shape to ensure that the ball slides out of the slide and falls into the sand trough.

[0010] The utility model adopts the above structure to achieve the following beneficial effects:

[0011] 1. The utility model can adjust the height of the slideway by setting a lifting demonstration device, so as to realize the physical gravity parabola demonstration of the ball at different heights.

[0012] 2. The utility model provides a transparent window and a second scale, so that a small ball can slide out of a slide at different speeds for demonstration, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall stereogram of the gravity demonstration platform for physical experiments of the utility model;

[0014] Figure 2 This is a front view cross-sectional view of the gravity demonstration platform for physical experiments of the utility model;

[0015] Figure 3 for Figure 1 Side view of the middle sand scraping device;

[0016] Figure 4 for Figure 3 A three-dimensional view of the middle guide cylinder.

[0017] Among them, 1. bottom plate, 2. sand trough, 3. side plate, 4. vertical plate, 5. slotting, 6. lifting demonstration device, 7. sand scraping device, 8. screw rod 1, 9. hand wheel, 10. connecting plate, 11. slideway, 12. placement groove, 13. small ball, 14. transparent window, 15. scale 2, 16. beam, 17. hollow cylinder, 18. wire cylinder, 19. screw rod 2, 20. scraper, 21. guide rod, 22. guide cylinder, 23. scale 3, 24. scale 1, 25. end plate. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] like Figure 1-4 The utility model of a gravity demonstration platform for physical experiments comprises a bottom plate 1, a sand trough 2 is arranged on the bottom plate 1, side plates 3 are arranged on both sides of the sand trough 2, a vertical plate 4 is arranged on the bottom plate 1, a scale 1 24 is arranged on the vertical plate 4, a scale 3 23 is arranged on the upper end of the sand trough 2, through which the height of the slide 11 can be known, and the position where the ball 13 lands can be accurately known through the scale 3 23, a slot 5 is arranged on one side of the vertical plate 4, a lifting demonstration device 6 is arranged in the vertical plate 4, and a sand scraping device 7 is slidably arranged in the side plate 3;

[0021] like Figure 1-2 The lifting demonstration device 6 includes a screw rod 8, which is rotatably arranged in the vertical plate 4. A hand wheel 9 is arranged on the top of the screw rod 8. A connecting plate 10 is slidably arranged in the slot 5. The connecting plate 10 is threadedly connected to the screw rod 8. A slide 11 is arranged at the outer end of the connecting plate 10. The sand trough 2 is aligned with the slide 11. The interior of the slide 11 is arranged in an arc shape to ensure that the ball 13 slides out of the slide 11 and falls into the sand trough 2. A placement groove 12 is arranged on the slide 11. The ball 13 is stored in the placement groove 12. A transparent window 14 is arranged on one side of the slide 11. The transparent window 14 is provided with a scale 2 15. The slide 11 is driven to rise and fall by the connecting plate 10, so that the height of the ball 13 sliding out of the slide 11 can be adjusted, so that the ball 13 can be demonstrated at different heights for demonstration experiments. The height of the ball 13 placed in the slide 11 can be adjusted by the scale 2 15, so that the speed of the ball 13 sliding out of the slide 11 can be adjusted.

[0022] like Figure 1 , 34, the sand scraping device 7 includes a cross beam 16, the cross beam 16 slides in the side plate 3, a hollow cylinder 17 is provided at the lower end of the cross beam 16, a wire cylinder 18 is rotatably provided in the hollow cylinder 17, a screw rod 19 is threadedly connected in the wire cylinder 18, a scraper 20 is provided at the lower end of the screw rod 19, a guide rod 21 is provided at the lower end of the cross beam 16, a guide cylinder 22 is provided at the upper end of the scraper 20, the guide rod 21 is inserted and slid in the guide cylinder 22, an end plate 25 is provided at the upper end of the guide cylinder 22, the end plate 25 can prevent the guide rod 21 from detaching from the guide cylinder 22, the sand in the sand trough 2 can be scraped flat by the scraper 20, so that the position where the ball 13 falls to the ground can be clearly seen.

[0023] When using it specifically, when performing a physical gravity parabola experiment demonstration, take out the ball 13 in the placement groove 12 and place it at the top of the slide 11. After releasing the hand, the ball 13 will slide in the slide 11, and finally slide out from the bottom end of the slide 11 to start gravity parabola movement. The ball 13 finally falls into the sand groove 2. The precise position where the ball 13 lands can be known through the scale 23. The scraper 20 is located on the sand groove 2 by sliding the crossbeam 16. The wire drum 18 is twisted, and the screw pushes the scraper 20 up and down. The sand in the sand trough 2 can be scraped flat to facilitate the next test demonstration. When it is necessary to demonstrate at different heights, by turning the hand wheel 9, the screw rod 8 will drive the connecting plate 10 to rise and fall, and the height of the slide 11 can be known through the scale 1 24. When it is necessary to demonstrate the ball 13 at different speeds, the ball 13 is placed at different heights in the slide 11. It can be seen through the transparent window 14 that the height of the ball 13 in the slide 11 at this time can be known from the scale 2 15, so that the speed of the ball 13 coming out of the slide 11 can be adjusted.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A gravity demonstration platform for physical experiments, comprising a bottom plate, a sand groove is provided on the bottom plate, side plates are provided on both sides of the sand groove, a vertical plate is provided on the bottom plate, and a groove is provided on one side of the vertical plate, characterized in that: A lifting demonstration device is arranged in the vertical plate, and a sand scraping device is slidably arranged in the side plate.

2. The gravity demonstration platform for physical experiments according to claim 1, characterized in that: The lifting demonstration device includes a screw rod 1, which is rotatably arranged in a vertical plate, a hand wheel is arranged on the top of the screw rod 1, a connecting plate is slidably arranged in the slot, the connecting plate is threadedly connected to the screw rod 1, a slide is arranged at the outer end of the connecting plate, a placement groove is arranged on the slide, a small ball is stored in the placement groove, a transparent window is arranged on one side of the slide, and a scale 2 is arranged on the transparent window.

3. The gravity demonstration platform for physical experiments according to claim 2, characterized in that: The sand scraping device includes a cross beam, which slides in the side plate. A hollow cylinder is provided at the lower end of the cross beam. A wire cylinder is rotatably provided in the hollow cylinder. A second screw rod is threadedly provided in the wire cylinder. A scraper is provided at the lower end of the second screw rod. A guide rod is provided at the lower end of the cross beam. A guide cylinder is provided at the upper end of the scraper. The guide rod is inserted and slid in the guide cylinder.

4. The gravity demonstration platform for physical experiments according to claim 3, characterized in that: The vertical plate is provided with a scale one, and the upper end of the sand trough is provided with a scale three.

5. The gravity demonstration platform for physical experiments according to claim 4, characterized in that: An end plate is provided at the upper end of the guide cylinder, and the end plate can prevent the guide rod from escaping from the guide cylinder.

6. The gravity demonstration platform for physical experiments according to claim 5, characterized in that: The sand trough is aligned with the slideway, and the interior of the slideway is arranged in an arc shape.

Images