A physical gravity experiment simulation device

Abstract

The present application belongs to the technical field of physical gravity test equipment, and relates to a physical gravity experiment simulation device. The device comprises a main body, an inclined plane belt, a distance measurer, a launching assembly and a limiting rod. In a natural state, a second counterweight moves downward, and the second counterweight drives a first counterweight to move upward through the inclined plane belt. The thickness of the inclined plane belt gradually decreases from one end provided with the first counterweight to the other end provided with the second counterweight. The side of the inclined plane belt away from the inclined plane is a plane and close to the main body. The limiting rod is used to control the movement of the inclined plane belt. The device can visually show the actual trajectory of the marble, so that students can intuitively understand the trajectory of the object in the horizontal projection motion. The setting of the inclined plane belt can control the distance of the upward movement of the first counterweight by controlling the distance between the limiting rod and the main body, and the control precision is high. The inclined plane belt is arranged on both sides of the main body, and the size of the simulation device in the vertical direction is not increased.

Description

Technical Field

[0001] This invention belongs to the technical field of physical gravity test equipment, and relates to a physical gravity experiment simulation device. Background Technology

[0002] Gravity is caused by the Earth's attraction, and all objects on Earth are subject to its influence. In teaching, to visually demonstrate the effects of gravity and facilitate student understanding, gravity simulation experiments are often conducted. The projectile motion experiment is a common gravity simulation experiment. In projectile motion, the object moves forward while simultaneously undergoing free fall under the influence of gravity; therefore, the projectile motion is a curve, not a straight line. In typical projectile motion experiments, the object's trajectory is usually calculated by first determining the initial velocity, then calculating the object's height at a certain point in time based on the initial velocity, and finally plotting the trajectory. This method does not provide a clear and intuitive representation of the object's motion.

[0003] A physical gravity experiment simulation device is disclosed in document CN112270875A. This device uses multiple ranging units to measure the height of a marble at various positions. A controller moves movable components vertically based on these height values, creating a line connecting the components that forms the actual trajectory of the marble. The device controls the vertical movement distance of the movable components by inflating an airbag with varying amounts of gas to control its outer diameter. However, the airbag is prone to deformation, and the amount of gas affects its elasticity, making it difficult to accurately control the upward movement distance of the movable components. Directly controlling the upward movement distance of the movable components via a telescopic rod would offer higher accuracy, but the telescopic rod would result in an excessively large vertical dimension of the device.

[0004] To address the aforementioned problems, this invention proposes a physical gravity experiment simulation device. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention proposes a physical gravity experiment simulation device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A physical gravity experiment simulation device includes:

[0007] The main body has a support plate that can be moved up and down on one side;

[0008] The system comprises multiple parallel inclined bands that overlap the upper part of the main body, with both ends of the bands located on opposite sides of the main body. A first counterweight is fixed to one end of each inclined band, and a second counterweight is fixed to the other end. The second counterweight has a greater mass than the first counterweight, and in its natural state, it moves downwards, causing the first counterweight to move upwards via the inclined bands. The thickness of the inclined bands gradually decreases from the end with the first counterweight to the end with the second counterweight. The side of the inclined band facing away from the inclined surface is flat and close to the main body.

[0009] A rangefinder is fixed to the lower end of the main body; there are multiple rangefinders, and each rangefinder corresponds one-to-one with a multiple inclined strip; the multiple rangefinders are on the same horizontal straight line; the first counterweight and the rangefinder are located on the same side of the main body, and the second counterweight and the support plate are located on the other side of the main body.

[0010] The limiting rods are multiple, and each limiting rod corresponds to one of the multiple inclined strips; the limiting rods are used to control the movement of the inclined strips.

[0011] The launching component is mounted on the main body and contains a marble. The marble launched by the launching component undergoes projectile motion, and the trajectory of the marble is in the same vertical plane as the rangefinder.

[0012] Furthermore, the inclined strip is formed by connecting multiple inclined blocks one after the other in sequence; adjacent inclined blocks are hinged together by a hinge shaft, and the hinge shaft is located on the side of the inclined block away from the plane of the inclined surface.

[0013] Furthermore, the upper end of the main body has an arc-shaped plate, and the inclined strip overlaps on the arc-shaped plate.

[0014] Furthermore, the main body is provided with guide grooves that slide with the inclined bands. There are multiple guide grooves that are parallel to each other, and each guide groove corresponds to one of the multiple inclined bands. The guide grooves are located on the side of the main body away from the support plate.

[0015] Furthermore, the main body has multiple through holes at the same horizontal level; and the through holes and the support plate are located on the same side of the main body; the multiple through holes correspond one-to-one with multiple inclined strips, and the inclined strips pass through the corresponding through holes.

[0016] Furthermore, the main body is provided with a drive assembly for moving the pallet up and down. The drive assembly includes a threaded rod and a motor. The motor is fixed at the lower end of the main body, the lower end of the threaded rod is fixedly mounted on the output shaft of the motor, and the upper end of the threaded rod is rotatably connected to the main body. The pallet is threadedly connected to the threaded rod.

[0017] A fixing rod is vertically fixed on the main body, and a sliding hole is provided on the support plate. The support plate slides with the fixing rod through the sliding hole.

[0018] Furthermore, an electric push rod is fixedly provided on the side wall of the through hole, and the limiting rod is fixedly installed at the output end of the electric push rod; the axis of the push rod of the electric push rod is horizontally set and perpendicular to the axis of the hinge shaft; the axis of the limiting rod is perpendicular to the axis of the push rod of the electric push rod.

[0019] Furthermore, the launching assembly includes a fixed plate and a launcher, the launcher being mounted on the fixed plate, the fixed plate being fixed to the upper part of one end of the main body; the launcher is located above the first counterweight, and the axis of the launcher is parallel to the straight line where the multiple rangefinders are located.

[0020] Furthermore, it also includes a processor, and both the rangefinder and the electric actuator are electrically connected to the processor.

[0021] Furthermore, the first counterweight is marked.

[0022] Compared with existing technologies, this invention has the following advantages: By measuring the distance between the marble and the rangefinder when the marble passes directly above it, the upward movement distance of the first counterweight is determined. Multiple first counterweights constitute the trajectory of the marble, allowing students to intuitively understand the trajectory of a projectile motion. The inclined surface allows for precise control of the upward movement distance of the first counterweight by controlling the distance between the limiting rod and the main body. The inclined surface is located on both sides of the main body, thus not increasing the vertical dimensions of the simulation device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a partial structural schematic diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the driving component in this invention;

[0026] Figure 4 This is a schematic diagram of the through hole structure in this invention;

[0027] Figure 5 This is a schematic diagram of the inclined strip structure in this invention.

[0028] In the diagram: 1. Main body; 2. Arc plate; 3. Guide groove; 4. Through hole; 5. Inclined block; 6. First counterweight; 7. Second counterweight; 8. Limiting rod; 9. Electric push rod; 10. Support plate; 11. Threaded rod; 12. Motor; 13. Fixing rod; 14. Rangefinder; 15. Fixing plate; 16. Transmitter. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-5 As shown, the technical solution adopted by the present invention is as follows: a physical gravity experiment simulation device, including a main body 1, an inclined belt, a rangefinder 14, a limiting rod 8, and a launching component.

[0031] Multiple guide grooves 3 are formed on one side of the main body 1, and these guide grooves 3 are parallel to each other. An arc-shaped plate 2 is located at the upper end of the main body 1. The arc-shaped plate 2 facilitates sliding of the inclined surface. Multiple through holes 4 are provided on the other side of the main body 1, each corresponding to one of the guide grooves 3, and all through holes 4 are at the same horizontal level. A support plate 10 is provided on the main body 1, moving vertically, and is located below the through holes 4. Specifically, a drive assembly for driving the support plate 10 to move vertically is provided on the main body 1. The drive assembly includes a threaded rod 11 and a motor 12. The motor 12 is fixedly installed at the lower part of the main body 1, and the lower end of the threaded rod 11 is fixedly installed on the output shaft of the motor 12, while the upper end of the threaded rod 11 is rotatably connected to the main body 1. The support plate 10 is threadedly connected to the threaded rod 11. A fixing rod 13 is fixedly provided on the main body 1, and a sliding hole is provided on the support plate 10 to slide with the fixing rod 13. Motor 12 drives threaded rod 11 to rotate, and threaded rod 11 drives support plate 10 to move up and down along fixed rod 13.

[0032] The inclined strip has multiple parallel sections, each corresponding to a guide groove 3 and a through hole 4. The inclined strips overlap the arc-shaped plate 2 and are positioned on both sides of the main body 1. The portion of the inclined strip on the same side as the guide groove 3 slides and is limited by the guide groove 3. The portion of the inclined strip away from the guide groove 3 passes through the through hole 4. The through hole 4 serves to guide and limit the inclined strip. A first counterweight 6 is fixed to one end of the inclined strip, and a second counterweight 7 is fixed to the other end. The mass of the second counterweight 7 is greater than the mass of the first counterweight 6. In its natural state, the second counterweight 7 drives the first counterweight 6 upward via the inclined strip, the first counterweight 6 moves upward along the guide groove 3, and the second counterweight 7 moves downward. The thickness of the inclined strip gradually decreases from the end with the first counterweight 6 to the end with the second counterweight 7. The thickness of the inclined strip is linearly related to its length. The side of the inclined strip away from the inclined surface is flat and close to the main body 1. The second counterweight 7 and the support plate 10 are located on the same side of the main body 1.

[0033] The inclined band is composed of multiple inclined blocks 5 connected end to end. Adjacent inclined blocks 5 are hinged together by hinge shafts, with the hinge shafts located on the side of the inclined block 5 facing away from the inclined surface. Thus, when the inclined band overlaps the main body 1, the hinge shafts contact the main body 1. This allows the inclined blocks 5 that mate with the curved plate 2 to rotate around their respective hinge shafts, ensuring the inclined band remains in contact with the curved plate 2. Furthermore, it reduces the friction between the inclined band and the main body 1, allowing the inclined band to move more smoothly.

[0034] There are multiple limiting rods 8, each corresponding to one of the inclined bands. The limiting rods 8 restrict the movement of the inclined bands. An electric push rod 9 is fixedly installed on the side wall of each through hole 4, and the limiting rod 8 is fixedly installed at the output end of the electric push rod 9. The axis of the push rod of the electric push rod 9 is horizontally set and perpendicular to the axis of the hinge axis of the inclined block 5. The axis of the limiting rod 8 is perpendicular to the axis of the push rod of the electric push rod 9. The direction of movement of the limiting rod 8 is perpendicular to the direction of movement of the inclined band. The distance between the limiting rod 8 and the main body 1 is controlled by the electric push rod 9. When the inclined band is in its natural state, as the second counterweight 7 moves downwards, the thickness of the inclined band gradually increases as it passes the limiting rod 8. When the thickness of the inclined band at the limiting rod 8 is equal to the distance between the limiting rod 8 and the main body 1, the inclined band will be stuck between the limiting rod 8 and the main body 1 and cannot move downwards. Therefore, by adjusting the distance between the corresponding limiting rod 8 and the main body 1, the upward movement distance of the corresponding first counterweight 6 can be controlled.

[0035] The rangefinder 14 is fixed to the lower part of the main body 1, and multiple rangefinders 14 correspond one-to-one with multiple inclined belts and multiple electric push rods 9. The multiple rangefinders 14 are on the same horizontal straight line. The rangefinders 14 and the first counterweight 6 are on the same side of the main body 1.

[0036] The launching assembly includes a fixed plate 15 and a launcher 16. The fixed plate 15 is fixed to the main body 1, and the launcher 16 is mounted on the fixed plate 15. The launcher 16 is located above the first counterweight 6, and the axis of the launcher 16 is parallel to the straight line where the multiple rangefinders 14 are located. The launching direction of the launcher 16 is directly above the straight line where the multiple rangefinders 14 are located. The launcher 16 contains a marble, which is launched by the launcher 16 in a projectile motion, and the trajectory of the marble is on the same vertical plane as the multiple rangefinders 14. The launching force of the launcher 16 is adjustable. The launcher 16 is prior art and will not be described in detail here. The rangefinders 14 are used to measure the distance between the marble and the corresponding rangefinder 14 when the marble passes directly above the rangefinder 14. Based on this, the distance that the corresponding first counterweight 6 should move upward is determined, and then the distance that the second counterweight 7 should move downward is obtained. Furthermore, the vertical distance between the limiting rod 8 and the side of the through hole 4 on the same side as the inclined band is obtained.

[0037] Markings are made on the first counterweight 6 to make the trajectory of the marble more prominent.

[0038] It also includes a processor, and the rangefinder 14 and the electric push rod 9 are both electrically connected to the processor.

[0039] Working principle: In the initial state, the first counterweight 6 is located at the lower end of the main body 1, and the support plate 10 supports the second counterweight 7. The second counterweight 7 has a downward tendency. Under the action of the first counterweight 6, the inclined belt is in a taut state and remains in contact with the main body 1.

[0040] In the physical gravity simulation experiment, rangefinder 14 is activated, followed by launcher 16, which launches a marble horizontally, causing it to undergo projectile motion. The marble has an initial horizontal velocity. During its forward movement, the marble moves downwards under its own weight, resulting in different distances between the marble and different rangefinders 14 as it passes directly above them. The distance measured by rangefinder 14 is the distance between the marble and that rangefinder when it passes directly above it. Assuming this distance is L, then the first counterweight 6 should move upwards a distance of L, and the second counterweight 7 should also move downwards a distance of L. Rangefinder 14 transmits the measured data to the processor. Since the interface of the inclined strip is a right triangle, the processor calculates the thickness of the inclined strip at the limit rod 8 when the second counterweight 7 moves down by L based on the trigonometric function relationship between the thickness and length of the inclined strip. Assuming this thickness is H, that is, the vertical distance between the limit rod 8 and the side of the through hole 4 that is on the same side as the inclined strip is H. At this time, the limit rod 8 plays a limiting role on the inclined strip, and then the distance that the corresponding electric push rod 9 should move is obtained.

[0041] The controller simultaneously activates multiple electric push rods 9, making the distance between the limit rod 8 and the main body 1 equal to the corresponding H value.

[0042] Subsequently, the controller starts motor 12, which drives threaded rod 11 to rotate. Threaded rod 11 drives support plate 10 to move downwards along fixed rod 13. The downward distance of support plate 10 is greater than the distance between the axis of transmitter 16 and rangefinder 14. This causes the second counterweight 7 to lose the supporting force of support plate 10, thus causing the second counterweight 7 to move downwards. At the same time, the second counterweight 7 pulls the first counterweight 6 upwards along guide groove 3 via inclined band. As the second counterweight 7 moves downwards, the thickness of the inclined band passing through limit rod 8 gradually increases. When the thickness of the inclined band passing through limit rod 8 equals the distance between limit rod 8 and main body 1, the inclined band is stuck between limit rod 8 and main body 1 and stops moving. At this time, the second counterweight 7 has moved downwards by L, and the first counterweight 6 has moved upwards by L. The upward distances of the multiple first counterweights 6 are different, and the sequential connection of the multiple first counterweights 6 at this time constitutes the trajectory of the marble.

[0043] To restore the device to its initial state, start motor 12, causing the support plate 10 to move upwards. This pushes the second counterweight 7 upwards, causing the first counterweight 6 to lose the tension from the second counterweight 7. Consequently, the first counterweight 6 moves downwards, pulling the inclined belt and keeping it taut. Simultaneously, the inclined block 5 on the same side as the first counterweight 6 moves downwards, while the inclined block 5 on the same side as the second counterweight 7 moves upwards. Because the mass of the second counterweight 7 is greater than the mass of the first counterweight 6, the first counterweight 6 cannot pull the second counterweight 7 via the inclined belt. Continue this process until the device returns to its initial state, then turn off motor 12.

[0044] It should be noted that when the inclined plate passes over the arc plate 2 at the upper end of the main body 1, the inclined block 5 will rotate around the corresponding hinge axis, so that the inclined block 5 and the arc plate 2 are in contact.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A physical gravity experiment simulation device, characterized in that, include: The main body (1) has a support plate (10) that can be moved up and down on one side; The inclined strip has multiple parallel inclined strips, which overlap the upper end of the main body (1) and have two ends on both sides of the main body (1). A first counterweight (6) is fixed at one end of the inclined strip, and a second counterweight (7) is fixed at the other end of the inclined strip. The mass of the second counterweight (7) is greater than that of the first counterweight (6), and in its natural state, the second counterweight (7) moves downward and drives the first counterweight (6) upward through the inclined strip. The thickness of the inclined strip gradually decreases from the end with the first counterweight (6) to the end with the second counterweight (7). The side of the inclined strip away from the inclined surface is flat and close to the main body (1). Rangefinder (14), which is fixed at the lower end of the main body (1); there are multiple rangefinders (14), and each rangefinder (14) corresponds to a multiple inclined strip; the multiple rangefinders (14) are on the same horizontal straight line; the first counterweight (6) and the rangefinder (14) are located on the same side of the main body (1), and the second counterweight (7) and the support plate (10) are located on the other side of the main body (1); Limiting rod (8), there are multiple limiting rods (8), and each limiting rod (8) corresponds to a multiple inclined strip; the limiting rod (8) is used to control the movement of the inclined strip; The launching component is mounted on the main body (1) and contains a marble. The marble launched by the launching component undergoes projectile motion, and the trajectory of the marble is in the same vertical plane as the rangefinder (14). The main body (1) has multiple through holes (4) at the same horizontal level; and the through holes (4) and the support plate (10) are located on the same side of the main body (1); the multiple through holes (4) correspond one-to-one with multiple inclined strips, and the inclined strips pass through the corresponding through holes (4); An electric push rod (9) is fixedly provided on the side wall of the through hole (4), and the limiting rod (8) is fixedly installed at the output end of the electric push rod (9).

2. The physical gravity experiment simulation device according to claim 1, characterized in that: The inclined strip is formed by connecting multiple inclined blocks (5) one after the other; adjacent inclined blocks (5) are hinged together by a hinge shaft, and the hinge shaft is located on the side of the inclined block (5) away from the plane of the inclined surface.

3. The physical gravity experiment simulation device according to claim 1, characterized in that: The upper end of the main body (1) has an arc-shaped plate (2), and the inclined strip overlaps on the arc-shaped plate (2).

4. The physical gravity experiment simulation device according to claim 1, characterized in that: The main body (1) is provided with guide grooves (3) that slide with the inclined band. There are multiple guide grooves (3) that are parallel to each other, and each guide groove (3) corresponds to one of the multiple inclined bands. The guide grooves (3) are located on the side of the main body (1) away from the support plate (10).

5. The physical gravity experiment simulation device according to claim 1, characterized in that: The main body (1) is provided with a drive assembly for moving the support plate (10) up and down. The drive assembly includes a threaded rod (11) and a motor (12). The motor (12) is fixed at the lower end of the main body (1). The lower end of the threaded rod (11) is fixedly installed on the output shaft of the motor (12). The upper end of the threaded rod (11) is rotatably connected to the main body (1). The support plate (10) is threadedly connected to the threaded rod (11). A fixing rod (13) is vertically fixed on the main body (1). A sliding hole is opened on the support plate (10). The support plate (10) slides with the fixing rod (13) through the sliding hole.

6. The physical gravity experiment simulation device according to claim 2, characterized in that: The axis of the push rod of the electric push rod (9) is set horizontally and perpendicular to the axis of the hinge shaft; the axis of the limiting rod (8) is perpendicular to the axis of the push rod of the electric push rod (9).

7. The physical gravity experiment simulation device according to claim 1, characterized in that: The launching assembly includes a fixed plate (15) and a launcher (16), the launcher (16) being mounted on the fixed plate (15), the fixed plate (15) being fixed to the upper part of one end of the main body (1); the launcher (16) is located above the first counterweight (6), and the axis of the launcher (16) is parallel to the straight line where the multiple rangefinders (14) are located.

8. The physical gravity experiment simulation device according to claim 7, characterized in that: It also includes a processor, and the rangefinder (14) and the electric push rod (9) are both electrically connected to the processor.

9. A physical gravity experiment simulation device according to claim 7, characterized in that: The first counterweight (6) is marked.

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