Centrifugal phenomenon demonstration device

Abstract

The utility model relates to the technical field of centrifugal phenomenon demonstration, in particular to a centrifugal phenomenon demonstration device which comprises a tray, a centrifugal disc is rotatably connected to the inner wall of the tray, a driving assembly is installed on the tray and connected with the centrifugal disc, and a plurality of sliding grooves are formed in the top of the centrifugal disc. The inner walls of the sliding grooves are slidably connected with centrifugal blocks, the outer walls of the centrifugal blocks are fixedly connected with sliding rods, the ends of the sliding rods penetrate through the centrifugal disc and are slidably connected with the centrifugal disc, the outer ends of the sliding rods are fixedly connected with limiting sleeves, the outer walls of the sliding rods are fixedly connected with toothed plates, and the inner walls of the sliding grooves are provided with mounting grooves. The inner wall of each mounting groove is rotatably connected with a rotating shaft, the circumferential outer wall of each rotating shaft is fixedly connected with a clamping plate, and the end part of each clamping plate is clamped and matched with a toothed plate. According to the device disclosed by the utility model, the sliding distance of the centrifugal block due to the eccentricity is fixed, so that students can clearly and intuitively observe the change of the position of the centrifugal block under the action of the eccentricity.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal phenomenon demonstration, and more specifically, to a centrifugal phenomenon demonstration device. Background Art

[0002] The centrifugal phenomenon demonstration device is a teaching aid or experimental device used to visually demonstrate the process of centrifugal motion. Experimental demonstrations using the device can greatly stimulate students' learning interest. Students become curious and amazed by the phenomena presented, which in turn fosters a strong desire for knowledge and exploration. This interest can motivate students to actively learn physics, improving their learning outcomes.

[0003] In the existing technology, such as the document with announcement number CN216287223U, a device for demonstrating the inertial centrifugal phenomenon suitable for science and technology museums is specifically disclosed. The device drives a rotating rod to rotate at high speed through a rotating motor. The two movable plates on the rotating rod approach each other under the action of inertial centrifugal force and squeeze the elastic steel sheet in the middle. During this process, the middle part of the steel sheet will bulge outward due to the force, thereby demonstrating the centrifugal phenomenon. However, in actual operation, since the steel sheet will rotate together with the rapid rotation of the motor, it is difficult for students to clearly observe the degree of bending of the steel sheet due to the force. For this reason, we propose a device for demonstrating the centrifugal phenomenon. Utility Model Content

[0004] Based on the above-mentioned technical problem that the steel sheet rotates along with the rapid rotation of the motor, which makes it difficult for students to clearly observe the degree of bending of the steel sheet due to the force, the utility model proposes a centrifugal phenomenon demonstration device.

[0005] The cam is provided with a toothed plate, and the inner wall of the cam is provided with a mounting groove, and the inner wall of the mounting groove is rotatably connected to the rotating shaft, and the outer wall of the mounting groove is fixed with a toothed plate, and the end portion of the toothed plate is engaged with the toothed plate.

[0006] Preferably, one end of the torsion spring is fixedly connected to the centrifugal disk, and the other end of the torsion spring is fixedly connected to the clamping plate.

[0007] Preferably, a rotatable ball is embedded in the bottom of the centrifugal block, and the ball is in rolling contact with the bottom of the inner wall of the chute.

[0008] Preferably, a spring is sleeved on the outer circumference of the slide rod, one end of the spring is fixedly connected to the centrifugal block, and the other end of the spring is fixedly connected to the centrifugal disk.

[0009] Preferably, the driving assembly includes a base, an end of the base is fixedly connected to the outer wall of the tray, and a motor is fixedly connected to the top of the base.

[0010] Preferably, the output end of the motor is fixedly connected to an output shaft, and the end of the output shaft extends into the tray and is rotatably connected thereto.

[0011] Preferably, the inner wall of the tray is rotatably connected to a drive shaft, the outer circumferential wall of the drive shaft is fixedly connected to a connecting sleeve, the connecting sleeve is fixedly connected to the centrifugal disk, the output shaft and the outer circumferential wall of the drive shaft are both fixedly connected to bevel gears, and the two bevel gears are meshed with each other.

[0012] Preferably, a shaft sleeve is rotatably connected to the circumferential outer wall of the drive shaft, and the shaft sleeve is rotatably connected to the output shaft.

[0013] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0014] 1. The centrifugal disc is driven to rotate by the driving assembly. When the centrifugal disc rotates, multiple centrifugal blocks slide along the inner wall of the slide groove to the outer wall of the centrifugal disc. When the centrifugal blocks slide, they also push the slide bar to slide to the outside of the centrifugal disc. After the motor stops, the end of the clamping plate clamps the tooth plate on the slide bar under the torsion force of the torsion spring, fixing the sliding distance of the centrifugal blocks due to the eccentricity, so that students can clearly and intuitively observe the changes in the position of the centrifugal blocks under the action of the eccentricity.

[0015] 2. After the demonstration, press the card plates separately to disengage them from the tooth plates. At this time, under the elastic force of the spring, the centrifugal block slides in the opposite direction along the slide groove, quickly resetting the centrifugal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the centrifugal block of the utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. tray; 2. centrifugal disc; 3. slide; 4. slide rod; 5. centrifugal block; 6. tooth plate; 7. limit sleeve; 8. rotating shaft; 9. torsion spring; 10. clamping plate; 11. limit plate; 12. mounting groove; 13. ball bearing; 14. spring; 15. connecting sleeve; 16. drive shaft; 17. bushing; 18. bevel gear; 19. output shaft; 20. machine base; 21. motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] In this utility model, unless otherwise specified or limited, the term "fixed connection" should be understood in a broad sense. For example, "fixed connection" can mean fixed installation, detachable connection, or integration; it can mean mechanical connection, electrical connection, or direct connection. Those skilled in the art will understand the specific meaning of the above terms in this utility model based on specific circumstances.

[0023] The centrifugal phenomenon in physics is an abstract and difficult concept to grasp, and it's difficult for students to fully grasp it simply through verbal explanations or written descriptions. By setting up a centrifugal phenomenon demonstration device, we can transform this abstract concept into an intuitive visual experience, helping students better understand the nature and principles of the centrifugal phenomenon.

[0024] Physics experiments and demonstrations can often attract students' attention and stimulate their interest in learning. The centrifugal phenomenon demonstration device can arouse students' curiosity and desire to explore through vivid and interesting experimental phenomena, prompting them to learn physics knowledge more actively.

[0025] Compared with traditional lecture-based teaching, experimental demonstrations through demonstration devices can impart knowledge more effectively. In the process of observing experimental phenomena, students can have a deeper understanding of physical concepts, thereby improving teaching effectiveness and learning performance.

[0026] The centrifugal phenomenon demonstration device is not only used to show experimental phenomena, but also can be used as a tool for students to conduct experimental operations. By operating the demonstration device by hand, students can exercise their practical ability and hands-on ability, and cultivate scientific thinking and experimental skills.

[0027] In existing experiments, the steel sheet rotates with the motor's rapid rotation, making it difficult for students to clearly observe the degree of bending caused by the applied force. This prevents students from gaining a deep and intuitive understanding of the experiment, which in turn hinders their interest in learning about and understanding the centrifugal phenomenon.

[0028] like Figure 1 、 Figure 3 and Figure 4 As shown, a centrifugal phenomenon demonstration device includes a tray 1, the inner wall of the tray 1 is rotatably connected to the centrifugal disk 2, a driving assembly is installed on the tray 1, the driving assembly is connected to the centrifugal disk 2, a plurality of slide grooves 3 are provided on the top of the centrifugal disk 2, the inner walls of the slide grooves 3 are slidably connected to the centrifugal blocks 5, the outer walls of the centrifugal blocks 5 are fixedly connected to the slide rod 4, the end of the slide rod 4 passes through the centrifugal disk 2 and is slidably connected to it, the outer end of the slide rod 4 is fixedly connected to the limiting sleeve 7, the outer wall of the slide rod 4 is fixedly connected to the tooth plate 6, the inner wall of the slide groove 3 is provided with a mounting groove 12, and the inner wall of the mounting groove 12 The walls are rotatably connected to a rotating shaft 8, and a clamping plate 10 is fixedly connected to the outer wall of the rotating shaft 8. The end of the clamping plate 10 is clamped with the tooth plate 6. Torsion springs 9 are sleeved on both ends of the rotating shaft 8, and the inner walls of the mounting grooves 12 are fixedly connected to the limiting plates 11. One end of the torsion spring 9 is fixedly connected to the centrifugal disk 2, and the other end of the torsion spring 9 is fixedly connected to the clamping plate 10; since the position of the centrifugal block 5 can be fixed after the motor 21 stops, students have enough time to observe and record the position changes of the centrifugal block 5 at different speeds, which helps them understand the centrifugal phenomenon more accurately.

[0029] like Figure 3 As shown, a rotatable ball 13 is embedded at the bottom of the centrifugal block 5, and the ball 13 is in rolling contact with the bottom of the inner wall of the chute 3. The design of the ball 13 can reduce the friction between the centrifugal block 5 and the centrifugal disk 2 and improve the service life of the structure.

[0030] like Figure 3 As shown, a spring 14 is provided on the outer circumference of the slide rod 4. One end of the spring 14 is fixedly connected to the centrifugal block 5, and the other end of the spring 14 is fixedly connected to the centrifugal disk 2. The design of the spring 14 can facilitate the rapid reset of the centrifugal block 5 after the demonstration.

[0031] like Figure 1 and Figure 2 As shown, the drive assembly includes a base 20, the end of the base 20 is fixedly connected to the outer wall of the tray 1, a motor 21 is fixedly connected to the top of the base 20, the output end of the motor 21 is fixedly connected to the output shaft 19, the end of the output shaft 19 extends into the tray 1 and is rotatably connected to the tray 1, the inner wall of the tray 1 is rotatably connected to the drive shaft 16, the circumferential outer wall of the drive shaft 16 is fixedly connected to the connecting sleeve 15, the connecting sleeve 15 is fixedly connected to the centrifugal disk 2, the circumferential outer walls of the output shaft 19 and the drive shaft 16 are fixedly connected to the bevel gear 18, and the two bevel gears 18 are meshed with each other.

[0032] like Figure 2 As shown, a shaft sleeve 17 is rotatably connected to the outer wall of the driving shaft 16 , and the shaft sleeve 17 is rotatably connected to the output shaft 19 .

[0033] Working principle: The output shaft 19 is driven to rotate by the motor 21, and the output shaft 19 drives the driving shaft 16 to rotate through the bevel gear 18, and the driving shaft 16 drives the centrifugal disc 2 to rotate through the connecting sleeve 15. When the centrifugal disc 2 rotates, multiple centrifugal blocks 5 slide along the inner wall of the slide groove 3 toward the outer wall of the circumference of the centrifugal disc 2. When the centrifugal block 5 slides, the ball 13 at the bottom thereof rolls along the inner wall of the slide groove 3, and the centrifugal block 5 simultaneously pushes the slide rod 4 to slide toward the outside of the centrifugal disc 2. At this time, the spring 14 is compressed. After the motor 21 stops, the end of the clamping plate 10 is clamped to the tooth plate 6 on the slide rod 4 under the torsion action of the torsion spring 9, and the sliding distance of the centrifugal block 5 due to the eccentricity is fixed, so that students can clearly observe the change in the position of the centrifugal block 5 under the action of the eccentricity.

[0034] After the demonstration, the card plates 10 are pressed separately to disengage the card plates 10 from the tooth plate 6 . At this time, under the elastic force of the spring 14 , the centrifugal block 5 slides in the opposite direction along the slide groove 3 , and the centrifugal block 5 is quickly reset.

[0035] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A centrifugal phenomenon demonstration device, comprising a tray (1), characterized in that: The inner wall of the tray (1) is rotatably connected to a centrifugal disk (2), a driving assembly is installed on the tray (1), and the driving assembly is connected to the centrifugal disk (2). A plurality of slide grooves (3) are provided on the top of the centrifugal disk (2), the inner walls of the slide grooves (3) are slidably connected to centrifugal blocks (5), the outer walls of the centrifugal blocks (5) are fixedly connected to the slide rods (4), the ends of the slide rods (4) pass through the centrifugal disk (2) and are slidably connected thereto, the outer ends of the slide rods (4) are fixedly connected to the limiting sleeves (7), the outer walls of the slide rods (4) are fixedly connected to the toothed plates (6), the inner walls of the slide grooves (3) are provided with mounting grooves (12), the inner walls of the mounting grooves (12) are rotatably connected to the rotating shaft (8), the circumferential outer wall of the rotating shaft (8) is fixedly connected to the clamping plate (10), the ends of the clamping plate (10) are clamped and matched with the toothed plates (6), the two ends of the rotating shaft (8) are sleeved with torsion springs (9), and the inner walls of the mounting grooves (12) are fixedly connected to the limiting plates (11).

2. The centrifugal phenomenon demonstration device according to claim 1, characterized in that: One end of the torsion spring (9) is fixedly connected to the centrifugal disc (2), and the other end of the torsion spring (9) is fixedly connected to the clamping plate (10).

3. The centrifugal phenomenon demonstration device according to claim 2, characterized in that: A rotatable ball (13) is embedded in the bottom of the centrifugal block (5), and the ball (13) is in rolling contact with the bottom of the inner wall of the chute (3).

4. The centrifugal phenomenon demonstration device according to claim 3, characterized in that: A spring (14) is sleeved on the outer circumferential wall of the slide rod (4), one end of the spring (14) is fixedly connected to the centrifugal block (5), and the other end of the spring (14) is fixedly connected to the centrifugal disk (2).

5. The centrifugal phenomenon demonstration device according to claim 4, characterized in that: The driving assembly comprises a machine base (20), an end of the machine base (20) is fixedly connected to the outer wall of the tray (1), and a motor (21) is fixedly connected to the top of the machine base (20).

6. The centrifugal phenomenon demonstration device according to claim 5, characterized in that: The output end of the motor (21) is fixedly connected to an output shaft (19), and the end of the output shaft (19) extends into the tray (1) and is rotatably connected thereto.

7. The centrifugal phenomenon demonstration device according to claim 6, characterized in that: The inner wall of the tray (1) is rotatably connected to a drive shaft (16), the outer circumferential wall of the drive shaft (16) is fixedly connected to a connecting sleeve (15), the connecting sleeve (15) is fixedly connected to the centrifugal disc (2), and the outer circumferential walls of the output shaft (19) and the drive shaft (16) are both fixedly connected to bevel gears (18), and the two bevel gears (18) are meshed with each other.

8. The centrifugal phenomenon demonstration device according to claim 7, characterized in that: The outer circumferential wall of the drive shaft (16) is rotatably connected to a shaft sleeve (17), and the shaft sleeve (17) is rotatably connected to the output shaft (19).

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