Demonstration instrument for law of conservation of angular momentum
By designing a demonstration instrument for the conservation of angular momentum with multiple demonstration components, the problem of insufficient intuitiveness and interactivity of existing equipment has been solved. It provides a flexible power supply method, realizes a comprehensive display of the conservation of angular momentum and enhances interactivity, and is suitable for demonstration in a variety of scenarios.
Patent Information
- Application Number
- CN202520462949.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing angular momentum conservation demonstration devices lack intuitiveness and interactivity, cannot fully demonstrate the manifestation of angular momentum conservation under different conditions, and have poor convenience and applicability, relying on external power sources to limit their use.
A demonstration instrument was designed, comprising a wooden disc gyroscope demonstration module, a precession demonstration module, a helicopter demonstration module, and a gyroscope module. Through multiple demonstration components, it showcases the practical application of conservation of angular momentum, supports battery power or AC power, and provides high flexibility and applicability.
It achieves diversified demonstrations of the law of conservation of angular momentum, enhances interactivity and operability, enables the audience to clearly understand the practical effects of conservation of angular momentum, and is applicable to independent operation in different locations.
Smart Images
Figure CN223897973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of angular momentum demonstration teaching aids, specifically a demonstration instrument for the law of conservation of angular momentum. Background Technology
[0002] The law of conservation of angular momentum is one of the fundamental laws of physics, widely applied in the analysis of the motion of rotating objects, astrophysics, and spacecraft attitude control. This law states that in the absence of an external torque, the angular momentum of an object remains constant. However, despite the significant theoretical and practical implications of the law of conservation of angular momentum, existing demonstration equipment in actual teaching and research often lacks intuitiveness and interactivity, failing to effectively help learners understand the practical applications and phenomena of angular momentum conservation.
[0003] Currently, many demonstration devices for the conservation of angular momentum have the following limitations:
[0004] Insufficient demonstration effect: Existing demonstration equipment can often only show a specific physical phenomenon and cannot comprehensively demonstrate the manifestation of conservation of angular momentum under different conditions. In particular, it lacks diverse physical models and demonstration methods.
[0005] Poor interactivity: Many existing devices lack sufficient interactive features, making it impossible for users to perceive the changes in the law of conservation of angular momentum under different situations through operation, and lacking sufficient adjustability and a sense of participation.
[0006] Poor equipment convenience and applicability: Many demonstration devices rely on external power sources or complex electrical systems, which limits their use in different locations, especially in environments where they need to be moved or where there is no power supply. Utility Model Content
[0007] The purpose of this invention is to provide a demonstration instrument for the law of conservation of angular momentum, which can enable the audience to clearly understand and observe the actual effect of conservation of angular momentum through multiple different demonstration components.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a demonstration instrument for the law of conservation of angular momentum, comprising a demonstration platform, multiple trays disposed on the front side of the demonstration platform, and demonstration components placed on each tray. The demonstration components are used to demonstrate the conservation of angular momentum. The demonstration components include a wooden disc gyroscope demonstration module, a precession demonstration module, a helicopter demonstration module, and a gyroscope module. The wooden disc gyroscope demonstration module includes a disc base, a power supply unit, a first rotating arm, a switch, and a first driving device. The power supply unit, switch, and first driving device are disposed on the rear side of the disc base, and the first rotating arm is disposed on the front side of the disc base and connected to the rotor at the shaft end of the first driving device. The precession demonstration module includes a first base, a first movable plate, a handle, a column, a first support arm, a second drive device, a mounting plate, a second rotating arm, and a switch and power supply unit. The first movable plate is movably mounted on the first base. A column is set in the middle of the first movable plate, and a handle is connected in the middle of the column. The first support arm is movably mounted horizontally on the top of the column. A mounting plate is set at the front end of the first support arm, and a second drive device is set on the mounting plate. The rotors on both sides of the shaft end of the second drive device are connected to the second rotating arm.
[0009] Preferably, the design of the wooden disc gyroscope demonstration module can produce precession upon startup, demonstrating the relationship between the conservation of angular momentum and the rotational state of an object. Upon startup, the rotation of the rotating arm allows the gyroscope to be stably supported on the plane, and the obvious precession during rotation further confirms the law of conservation of angular momentum.
[0010] Preferably, before the precession demonstration module is run, the movable disk and column and other components are rotated counterclockwise or clockwise by the handle. When the second drive device drives the second rotating arm to rotate, the counterclockwise rotation generates upward angular momentum, and the clockwise rotation generates downward angular momentum.
[0011] Preferably, the helicopter demonstration module includes a second base, a second movable disk, a main rotor, a tail rotor, a fuselage, a power supply unit, and switches. A support column is located in the center of the second base, and the second movable disk is rotatably mounted on top of the support column. The fuselage is mounted on the second movable disk, with the main rotor and tail rotor located on the top and tail sides of the fuselage, respectively. The main rotor and tail rotor are driven by third drive devices. A conductive slip ring is located within the second movable disk. The power supply unit is mounted on the second base and is connected to the two third drive devices via wires extending into the conductive slip ring. The helicopter demonstration module simulates the movements of the main rotor and tail rotor, demonstrating how, when an external torque is applied to the main rotor, a reaction torque is generated by the tail rotor to conserve angular momentum and restore the helicopter's equilibrium state. This module helps in understanding the relationship between external torque and the conservation of angular momentum.
[0012] Preferably, the gyroscope module is a three-degree-of-freedom frame-type gyroscope. The gyroscope module includes an outer frame plate, a first inner frame rotatably mounted inside the outer frame plate, a second inner frame rotatably mounted inside the first inner frame, and a third inner frame rotatably mounted inside the second inner frame. The third inner frame houses a power supply unit, a fourth drive device, and a disk. The fourth drive device is powered by the power supply unit, and its shaft end is connected to the disk. Utilizing a three-degree-of-freedom frame design, the gyroscope module can accurately measure changes in angular momentum and can be applied to space navigation and positioning. Through a demonstration of the precession of the inner and outer frames, viewers can intuitively understand how a gyroscope applies the conservation of angular momentum for attitude measurement in inertial space, providing a demonstration for technological research in related fields.
[0013] Preferably, the power supply unit is a battery module powered by a battery or a power module powered by mains power.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The demonstration instrument of this utility model comprehensively demonstrates various practical applications and phenomena of the law of conservation of angular momentum through multiple different demonstration components, such as a wooden disc gyroscope demonstration module, a precession demonstration module, a helicopter demonstration module, and a gyroscope module. Each demonstration component intuitively displays different manifestations of the conservation of angular momentum through a physical model, enabling the audience to clearly understand and observe the actual effects of the conservation of angular momentum, and possessing a certain degree of intuitiveness, interactivity, and operability.
[0016] 2. The power supply unit of the demonstration instrument of this utility model is designed to support either battery power or mains power, providing greater flexibility and applicability. The battery-based power supply design allows the device to operate independently without an external power source, making it particularly suitable for use in mountainous areas, outdoors, and mobile locations. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the wooden disc gyroscope demonstration module in an embodiment of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the wooden disc gyroscope demonstration module in an embodiment of this utility model;
[0020] Figure 4 This is a schematic diagram of the precession demonstration module in an embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram of the helicopter demonstration module in an embodiment of the present invention;
[0022] Figure 6This is a schematic diagram of the structure of the gyroscope module in an embodiment of this utility model.
[0023] In the picture:
[0024] 1. Demonstration stand;
[0025] 2. Pallet;
[0026] 3. Wooden disc gyroscope demonstration module; 301. Disc base; 302. First rotating arm; 303. First driving device;
[0027] 4. Precession Demonstration Module; 401. First Base; 402. First Movable Plate; 403. Handle; 404. Column; 405. First Support Arm; 406. Second Drive Device; 407. Mounting Plate; 408. Second Rotating Arm;
[0028] 5. Helicopter demonstration module; 501. Second base; 502. Second movable plate; 503. Main rotor; 504. Tail rotor; 505. Fuselage;
[0029] 6. Gyroscope module; 601. Outer frame plate; 602. First inner frame; 603. Second inner frame; 604. Third inner frame; 605. Fourth drive device; 606. Disk;
[0030] 7. Power supply unit. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] Please see Figure 1 This utility model provides a technical solution: a demonstration instrument for the law of conservation of angular momentum, including a demonstration platform 1, multiple trays 2 arranged on the front side of the demonstration platform 1, and demonstration components placed on each tray 2. The demonstration components are used to demonstrate the conservation of angular momentum. The demonstration components include a wooden disc gyroscope demonstration module 3, a precession demonstration module 4, a helicopter demonstration module 5, and a gyroscope module 6.
[0035] Please see Figure 2 , Figure 3 In this embodiment, the wooden disc gyroscope demonstration module 3 includes a disc base 301, a power supply unit 7, a first rotating arm 302, a switch, and a first driving device 303. The power supply unit 7, switch, and first driving device 303 are located on the rear side of the disc base 301, while the first rotating arm 302, connected to the rotor at the shaft end of the first driving device 303, is located on the front side of the disc base 301. The wooden disc gyroscope demonstration module 3 is designed to produce precession upon startup, demonstrating the relationship between the conservation of angular momentum and the rotational state of an object. Upon startup, the rotation of the rotating arm allows the gyroscope to be stably supported on a plane, and the obvious precession during rotation further confirms the law of conservation of angular momentum.
[0036] Please see Figure 4In this embodiment, the precession demonstration module 4 includes a first base 401, a first movable plate 402, a handle 403, a column 404, a first support arm 405, a second drive device 406, a mounting plate 407, a second rotating arm 408, and a switch and power supply unit 7. The first movable plate 402 is movably mounted on the first base 401. A column 404 is disposed in the middle of the first movable plate 402, and a handle 403 is connected to the middle of the column 404. The top of the column 404 is horizontally movably mounted with a first... Support arm 405; the first support arm 405 is provided with a mounting plate 407 at its front end, and a second drive device 406 is provided on the mounting plate 407. The rotors on both sides of the shaft end of the second drive device 406 are connected to the second rotating arm 408. Before the precession demonstration module 4 is run, the movable plate and column 404 and other components are rotated counterclockwise or clockwise by the handle 403. When the second drive device 406 drives the second rotating arm 408 to rotate, the counterclockwise rotation generates an upward angular momentum, and the clockwise rotation generates a downward angular momentum.
[0037] Please see Figure 5 In this embodiment, the helicopter demonstration module 5 includes a second base 501, a second movable disk 502, a main rotor 503, a tail rotor 504, a fuselage 505, a power supply unit 7, and a switch. A support column is located in the middle of the second base 501, and the second movable disk 502 is rotatably mounted on top of the support column. The fuselage 505 is mounted on the second movable disk 502. The main rotor 503 and tail rotor 504 are respectively mounted on the top and tail sides of the fuselage 505. The main rotor 503 and tail rotor 504 are driven by third drive devices. A conductive slip ring is provided inside the second movable disk 502. The power supply unit 7 is mounted on the second base 501 and is connected to the two third drive devices via wires extending into the conductive slip ring. The helicopter demonstration module 5 demonstrates how, when an external torque is applied to the main rotor 503 and tail rotor 504, the tail rotor 504 generates a reaction torque to conserve angular momentum and restore the helicopter's equilibrium state. This module helps in understanding the relationship between external torque and the conservation of angular momentum.
[0038] Please see Figure 6In this embodiment, the gyroscope module 6 is a three-degree-of-freedom frame-type gyroscope. The gyroscope module 6 includes an outer frame plate 601, a first inner frame 602 rotatably mounted inside the outer frame plate 601, a second inner frame 603 rotatably mounted inside the first inner frame 602, and a third inner frame 604 rotatably mounted inside the second inner frame 603. The third inner frame 604 is equipped with a power supply unit 7, a fourth drive device 605, and a disk 606. The fourth drive device 605 is powered by the power supply unit 7, and its shaft is connected to the disk 606. The gyroscope module 6 utilizes a three-degree-of-freedom frame design, enabling precise measurement of angular momentum changes and application in space navigation and positioning. Through a demonstration of the precession of the inner and outer frames, viewers can intuitively understand how a gyroscope applies the conservation of angular momentum for attitude measurement in inertial space, providing a demonstration for technological research in related fields.
[0039] In this embodiment, the power supply unit 7 is a battery module powered by a battery or a power supply module powered by mains power.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A demonstration instrument for the law of conservation of angular momentum, characterized in that, It includes a demonstration platform (1), multiple trays (2) arranged in front of the demonstration platform (1), and demonstration components placed on each tray (2). The demonstration components are used to demonstrate the conservation of angular momentum. The demonstration components include a wooden disc gyroscope demonstration module (3), a precession demonstration module (4), a helicopter demonstration module (5), and a gyroscope module (6), wherein: The wooden disc gyroscope demonstration module (3) includes a disc base (301), a power supply unit (7), a first rotating arm (302), a switch and a first driving device (303), wherein the power supply unit (7), the switch and the first driving device (303) are arranged on the rear side of the disc base (301), and the first rotating arm (302) is arranged on the front side of the disc base (301) and connected to the rotor at the shaft end of the first driving device (303); The precession demonstration module (4) includes a first base (401), a first movable plate (402), a handle (403), a column (404), a first support arm (405), a second drive device (406), a mounting plate (407), a second rotating arm (408), and a switch and power supply unit (7), wherein the first movable plate (402) is movably mounted on the first base (401); The helicopter demonstration module (5) includes a second base (501), a second movable plate (502), a main rotor (503), a tail rotor (504), a fuselage (505), a power supply unit (7), and a switch. The second base (501) has a support column in the middle, and the second movable plate (502) is rotatably mounted on the top of the support column. The gyroscope module (6) is a three-degree-of-freedom frame gyroscope. The gyroscope module (6) includes an outer frame plate (601), a first inner frame (602) rotatably mounted inside the outer frame plate (601), a second inner frame (603) rotatably mounted inside the first inner frame (602), and a third inner frame (604) rotatably mounted inside the second inner frame (603).
2. The demonstration instrument for the law of conservation of angular momentum according to claim 1, characterized in that: The first movable plate (402) has a column (404) in the middle, and a handle (403) is connected in the middle of the column (404). The top of the column (404) is horizontally movably mounted with a first support arm (405). The front end of the first support arm (405) is provided with a mounting plate (407). The mounting plate (407) is provided with a second drive device (406). The rotors on both sides of the shaft end of the second drive device (406) are connected to the second rotating arm (408).
3. The demonstration instrument for the law of conservation of angular momentum according to claim 1, characterized in that: The fuselage (505) is mounted on the second movable disk (502). The main rotor (503) and tail rotor (504) are respectively mounted on the top and tail sides of the fuselage (505). The main rotor (503) and tail rotor (504) are driven by the third drive device. The second movable disk (502) is equipped with a conductive slip ring. The power supply unit (7) is mounted on the second base (501). The power supply unit (7) extends into the conductive slip ring through a wire and is connected to the two third drive devices respectively.
4. The demonstration instrument for the law of conservation of angular momentum according to claim 1, characterized in that: The third inner frame (604) is provided with a power supply unit (7), a fourth drive device (605) and a disk (606). The fourth drive device (605) is powered by the power supply unit (7) and the shaft end of the fourth drive device (605) is connected to the disk (606).
5. The demonstration instrument for the law of conservation of angular momentum according to claim 1, characterized in that: The power supply unit (7) is a battery module powered by a battery or a power supply module powered by mains power.