An automatic weighing and suspension adjusting upward pulling magnetic suspension device

Abstract

The utility model relates to a kind of upper pull magnetic suspension device of automatic weighing and suspension adjustment in the field of magnetic suspension device, including base and suspender, base is provided with display area, and suspender is located in display area, and base is provided with electric control cavity, and electric control cavity is provided with electromagnet, main control circuit board and power supply, electromagnet and power supply are electrically connected with main control circuit board, and suspender is provided with permanent magnet, permanent magnet is aligned with electromagnet, and the polarity of the opposite side of permanent magnet is opposite after electromagnet energization, electric control cavity is provided with lifting assembly and tray, and tray is connected with lifting assembly by weight sensor, and lifting assembly is used to drive tray to move up and down in display area relative to base, and suspender can be placed on the surface of tray, electromagnet is provided with position sensor, and position sensor is used to obtain the position information of suspender in display area, the weight of suspender can be automatically detected to carry out suspension demonstration, it is simple to operate, convenient to use, and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation devices, and in particular to an upward magnetic levitation device that can automatically weigh and adjust levitation. Background Technology

[0002] Levitation devices are a technology that uses magnetic fields to suspend objects in the air; also known as magnetic levitation technology. Magnetic levitation technology is widely used in transportation, industrial production, medicine, and scientific research. For example, maglev trains are the most famous application of magnetic levitation technology, enabling high-speed travel and reducing friction. Magnetic levitation technology can also be used in material handling and processing that requires frictionless motion. With the maturation of magnetic levitation technology, more and more magnetic levitation devices are appearing in the civilian market, such as magnetic levitation teaching materials, handicrafts, souvenirs, models, toys, ornaments, and trendy toys.

[0003] Magnetic levitation principle: Magnetic levitation devices have two levitation forms: downward levitation and upward levitation. In upward levitation, when the circuit is energized, the electromagnet generates a magnetic field, which attracts the permanent magnet. The magnetic levitation control system adjusts the current to change the strength of the magnetic field, thereby changing the strength of the attraction between the electromagnet and the permanent magnet. When the strength of the attraction equals the weight of the suspended object, the object can float stably in the air.

[0004] Existing levitation devices cannot automatically obtain the weight of the suspended body. Without this key reference value, the system cannot calculate the required current based on the weight of the suspended body. It can only rely on manual adjustment to find a balance point between attraction and gravity to achieve stable levitation, which is cumbersome and inefficient. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides an upward magnetic levitation device that can automatically weigh and adjust the suspension, which can effectively solve the technical problem of not being able to automatically obtain the weight of the suspended body.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An upward magnetic levitation device with automatic weighing and suspension adjustment includes a base and a levitation body. The base has a display area, and the levitation body is located within the display area. An electronic control cavity is located within the base, containing an electromagnet, a main control circuit board, and a power supply. The electromagnet and power supply are electrically connected to the main control circuit board. A permanent magnet is located within the levitation body, aligned with the electromagnet. When energized, the electromagnet generates a magnetic field that interacts with the permanent magnet. A lifting assembly and a tray are located within the electronic control cavity. The tray is connected to the lifting assembly via a weight sensor. The lifting assembly is used to move the tray up and down relative to the base within the display area. The levitation body can be placed on the surface of the tray. A position sensor is located within the electromagnet, used to acquire the position information of the levitation body within the display area. Both the weight sensor and the position sensor are electrically connected to the main control circuit board.

[0008] Furthermore, the lifting assembly includes a drive motor, a screw, a screw sleeve, and a lifting frame. The lifting frame is connected to the screw via the screw sleeve, and the drive motor is connected to the screw via a transmission connection. When the screw rotates, it drives the lifting frame to move up and down.

[0009] Furthermore, the lifting frame consists of a lifting top plate, a lifting bottom plate, and support columns. The lifting top plate and the lifting bottom plate are arranged in parallel and connected by the support columns. A threaded sleeve is located at the center of the lifting bottom plate.

[0010] Furthermore, a support frame is provided inside the electrical control cavity, and a guide column is provided at the upper end of the support frame. A guide hole is provided in the lifting frame, and the guide column passes through the guide hole. The guide column and the screw are parallel to each other.

[0011] Furthermore, a sliding sleeve is provided inside the guide hole, and the guide post passes through the sliding sleeve with its surface slidably connected to the inside of the sliding sleeve.

[0012] Furthermore, the drive motor is mounted on the support frame, and the rotating shaft of the drive motor is connected to the screw via a coupling.

[0013] Compared with the prior art, the advantages of this utility model are: it is equipped with a weight sensor, which can automatically detect the weight of the suspended body for levitation display. When in use, the suspended body is placed on a tray. When the tray presses against the weight sensor, the weight sensor can obtain the total weight of the suspended body and the tray, and convert it into an electrical signal and transmit it to the main control circuit board. Since the weight of the tray is fixed, the main control circuit board can obtain the weight of the suspended body and the current required by the electromagnet according to the preset calculation formula. The suspended body is moved to the center of the display area by the lifting component so that the attraction of the electromagnet to the permanent magnet is equal to the weight of the entire suspended body. After the lifting component is reset, the levitation display can be realized. It is simple to operate, convenient to use, and more efficient. Attached Figure Description

[0014] Figure 1This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the suspended body during weighing in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the tray when it is raised in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the suspended body in this utility model when it is suspended for display;

[0018] Figure 5 This is a schematic diagram of the permanent magnet attracted by the electromagnet after it is energized in this utility model;

[0019] Figure 6 This is a schematic diagram of the repulsive permanent magnet after the electromagnet is energized in this utility model;

[0020] The following are the labels in the diagram: 1-Base, 2-Suspension body, 3-Display area, 4-Electrical control cavity, 5-Electromagnet, 6-Main control circuit board, 8-Permanent magnet, 9-Tray, 10-Lifting top plate, 11-Weight sensor, 14-Position sensor, 15-Drive motor, 16-Screw, 17-Lifting base plate, 18-Support column, 19-Guide column, 20-Support frame. Detailed Implementation

[0021] 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.

[0022] The following is combined Figures 1-5 This invention provides a detailed description of an upward magnetic levitation device capable of automatic weighing and levitation adjustment:

[0023] An upward magnetic levitation device with automatic weighing and suspension adjustment includes a base 1 and a levitation body 2. The base 1 has a display area 3, and the levitation body 2 is located in the display area 3. The base 1 has an electrical control cavity 4, which contains an electromagnet 5, a main control circuit board 6, and a power supply. The electromagnet 5 and the power supply are electrically connected to the main control circuit board 6. The levitation body 2 contains a permanent magnet 8, which is aligned with the electromagnet 5. When the electromagnet 5 is energized, it generates a magnetic field that interacts with the permanent magnet 8. The electrical control cavity 4 contains a lifting assembly and a tray 9. The tray 9 is connected to the lifting assembly via a weight sensor 11. The lifting assembly is used to move the tray 9 up and down relative to the base 1 in the display area 3. The levitation body 2 can be placed on the surface of the tray 9. The electromagnet 5 contains a position sensor 14, which is used to acquire the position information of the levitation body 2 in the display area 3. Both the weight sensor 11 and the position sensor 14 are electrically connected to the main control circuit board 6.

[0024] Position sensor 14 is a Hall sensor or an infrared sensor.

[0025] Hall effect sensor: By directly detecting changes in the magnetic field strength of the permanent magnet 8 inside the levitation body 2, it obtains precise height information of the levitation body 2 in a non-contact manner. The inverse relationship between magnetic field strength and distance makes its measurement highly sensitive and unaffected by the lighting conditions in the display area 3, ensuring stable and reliable data feedback.

[0026] Infrared sensor solution: This solution utilizes an infrared transmitting and receiving module to detect reflected signals from the surface of the suspended body 2, and calculates its height based on the time difference or intensity change of the optical path. It offers strong resistance to electromagnetic interference and is suitable for positioning suspended bodies 2 with complex shapes.

[0027] The device can automatically detect the weight of the suspended body 2 for levitation display. When in use, the suspended body 2 is placed on the tray 9. When the tray 9 presses against the weight sensor 11, the weight sensor 11 can obtain the total weight of the suspended body 2 and the tray 9, and convert it into an electrical signal and transmit it to the main control circuit board 6. Since the weight of the tray 9 is fixed, the main control circuit board 6 can obtain the weight of the suspended body 2 and the current required by the electromagnet 5 according to the preset calculation formula. The suspended body 2 is moved to the center of the display area 3 by the lifting component so that the attraction of the electromagnet to the permanent magnet 8 is equal to the weight of the entire suspended body 2. After the lifting component is reset, the levitation display can be realized. It is simple to operate, convenient to use, and more efficient.

[0028] The lifting assembly includes a drive motor 15, a screw 16, a screw sleeve, and a lifting frame. The lifting frame is connected to the screw 16 via the screw sleeve, and the drive motor 15 is connected to the screw 16 via a transmission connection. When the screw 16 rotates, it drives the lifting frame to move up and down. The transmission method using the screw 16 and the screw sleeve is simple and reliable, with precise transmission and a self-locking function. It can accurately control the lifting height and position of the lifting frame, thereby controlling the tray 9 and the suspended body 2, ensuring that the suspended body 2 can be stably lifted to the calculated target suspension height area, providing an accurate positional basis for subsequent electromagnetic levitation.

[0029] Furthermore, the lifting frame consists of a lifting top plate 10, a lifting bottom plate 17, and a support column 18. The lifting top plate 10 and the lifting bottom plate 17 are arranged in parallel and connected by the support column 18. A screw sleeve is located at the center of the lifting bottom plate 17, which can effectively bear the weight of the suspended body 2 and resist deformation. The screw sleeve is located at the center of the bottom plate, so that the lifting driving force acts on the center, which helps to maintain the balance of the lifting frame and the tray 9, prevents tilting during the lifting process, ensures that the weight sensor 11 is subjected to uniform force and accurate measurement, and ensures the stability of the suspended body 2. A support frame 20 is provided in the electrical control cavity 4. A guide column 19 is provided at the upper end of the support frame 20. A guide hole is provided in the lifting frame, and the guide column 19 passes through the guide hole. The guide column 19 is parallel to the screw 16, which provides precise vertical guidance for the lifting movement of the lifting frame, effectively preventing the lifting frame from rotating or shifting laterally during the lifting process, and ensuring the linearity and stability of the lifting movement.

[0030] A sliding sleeve is provided inside the guide hole. The guide post 19 passes through the sliding sleeve and the surface of the guide post 19 is slidably connected to the inside of the sliding sleeve. The sliding sleeve significantly reduces the sliding friction resistance between the guide post 19 and the guide hole, making the lifting movement smoother and more stable, reducing the wear of moving parts, and improving the service life and operational stability of the lifting mechanism.

[0031] The process and principle of levitation display:

[0032] The first step is to weigh the suspended body 2. The suspended body 2 is placed on the tray 9, and the gravity of the suspended body 2 is transmitted to the weight sensor 11 through the tray 9. The weight sensor 11 detects and outputs an analog or digital electrical signal of the sum of the weight of the suspended body 2 and the weight of the tray 9 to the main control circuit board 6 in real time.

[0033] The second step is weight calculation and parameter determination. The main control circuit board 6 receives the signal from the weight sensor 11. Since the weight of the tray 9 is a pre-calibrated constant stored in the controller, the main control circuit board 6 accurately calculates the actual weight of the suspended body 2 using a preset algorithm. The calculation formula is: Weight of suspended body 2 = Total weight signal value - Weight calibration value of tray 9.

[0034] Based on the calculated weight of the levitation body 2 and the known magnetic properties of the permanent magnet 8, the main control circuit board 6 calculates two key control parameters: the required levitation height of the levitation body 2 and the required operating current value of the electromagnet 5.

[0035] The required levitation height of the levitation body 2 is the optimal vertical distance that the center of the permanent magnet 8 inside the levitation body 2 needs to reach relative to the reference plane of the electromagnet 5. At this distance, when the electromagnet 5 is supplied with a suitable current, the magnetic attraction force generated is closest to the gravity of the levitation body 2.

[0036] Required operating current value for electromagnet 5: The precise current value that needs to be applied to electromagnet 5 to achieve magnetic and gravitational balance at the target height for levitation body 2.

[0037] The third step involves the lifting and positioning of the suspended body 2. The main control circuit board 6 sends a command to the drive motor 15 of the lifting assembly. The drive motor 15 starts and drives the screw 16 to rotate via the coupling. The rotation of the screw 16 drives the engaging sleeve, thereby causing the entire lifting frame to move vertically up and down. The lifting frame lifts the tray 9 on it and the suspended body 2 placed on the tray 9 together. During the lifting process, the position sensor 14 inside the electromagnet 5 continuously monitors the real-time height position of the suspended body 2 and feeds this information back to the main control circuit board 6. Based on the feedback information from the position sensor 14, the main control circuit board 6 controls the start, stop, and direction of the drive motor 15 to perform closed-loop position control until the position sensor 14 detects that the suspended body 2 has reached the calculated target suspension height.

[0038] The fourth step is to energize the electromagnet to generate a magnetic field. When the levitation body 2 is accurately lifted to the required height by the lifting assembly, the main control circuit board 6 outputs a pre-calculated working current to the electromagnet 5. After the electromagnet 5 is energized, it generates a strong magnetic field, which is opposite to the polarity of the opposite side of the permanent magnet 8 inside the levitation body 2, generating an upward magnetic attraction.

[0039] Based on the real-time feedback from the position sensor 14, the main control circuit board 6 monitors whether the height of the levitation body 2 is stable, and performs fine closed-loop dynamic adjustment of the current of the electromagnet 5 so that the attractive force of the electromagnet 5 is equal to the gravity of the levitation body 2, thereby achieving a stable magnetic levitation balance state.

[0040] Step 5, Suspension Display. Once it is confirmed that the suspended body 2 has established a stable suspension state at the target height, the main control circuit board 6 controls the lifting component to begin descending and resetting. At this time, under the precise magnetic force generated by the electromagnet 5, the suspended body 2 is stably suspended at the preset center position of the display area 3, performing a non-contact suspension display.

[0041] During the levitation display, position sensor 14 continuously monitors the height of the levitation body 2, while the main control circuit board 6 constantly makes subtle adjustments to the magnitude and direction of the current in the electromagnet 5 to ensure the stable display of the levitation body 2. The magnetic field direction of the permanent magnet 8 constantly changes, and during the levitation display, position sensor 14 sensitively detects these positional changes of the levitation body 2. Figure 5 As shown, when the position of the levitation body 2 drops beyond a preset height range, the polarity of the permanent magnet 8 and the side opposite to that of the electromagnet 5 is reversed, and the electromagnet 5 attracts the permanent magnet 8, causing the levitation body 2 to move upward; as Figure 6 As shown, when the position of the suspended body 2 rises above the preset height range, the polarity of the permanent magnet 8 and the opposite side of the electromagnet 5 are the same. The electromagnet 5 repels the permanent magnet 8, causing the suspended body 2 to move downward. The permanent magnet 8 is continuously attracted and repelled by the electromagnet 5 in this cycle, thereby stabilizing the suspended body 2 within a tiny height range, which is almost invisible to the naked eye. The entire operation is automated, simple, and efficient.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An upward magnetic levitation device with automatic weighing and suspension adjustment, comprising a base and a levitation body, wherein a display area is provided in the base, the levitation body is located in the display area, an electronic control cavity is provided inside the base, an electromagnet, a main control circuit board and a power supply are provided inside the electronic control cavity, the electromagnet and the power supply are electrically connected to the main control circuit board, a permanent magnet is provided inside the levitation body, the permanent magnet is aligned with the electromagnet, and the electromagnet generates a magnetic field that interacts with the permanent magnet when energized, characterized in that: The electronic control cavity is equipped with a lifting assembly and a tray. The tray is connected to the lifting assembly via a weight sensor. The lifting assembly is used to move the tray up and down relative to the base in the display area. The suspended body can be placed on the surface of the tray. The electromagnetic body is equipped with a position sensor, which is used to obtain the position information of the suspended body in the display area. Both the weight sensor and the position sensor are electrically connected to the main control circuit board.

2. The upward magnetic levitation device with automatic weighing and suspension adjustment according to claim 1, characterized in that: The lifting assembly includes a drive motor, a screw, a screw sleeve, and a lifting frame. The lifting frame is connected to the screw via the screw sleeve, and the drive motor is connected to the screw via a transmission connection. When the screw rotates, it drives the lifting frame to move up and down.

3. The upward magnetic levitation device with automatic weighing and suspension adjustment according to claim 2, characterized in that: The lifting frame consists of a lifting top plate, a lifting bottom plate, and support columns. The lifting top plate and the lifting bottom plate are arranged in parallel and connected by the support columns. A screw sleeve is located at the center of the lifting bottom plate.

4. The upward magnetic levitation device with automatic weighing and suspension adjustment according to claim 2, characterized in that: The electrical control cavity is equipped with a support frame, and the upper end of the support frame is equipped with a guide column. The lifting frame is equipped with a guide hole, the guide column passes through the guide hole, and the guide column is parallel to the screw.

5. The upward magnetic levitation device with automatic weighing and suspension adjustment according to claim 4, characterized in that: A sliding sleeve is provided inside the guide hole, and the guide post passes through the sliding sleeve, with the surface of the guide post slidably connected to the inside of the sliding sleeve.

6. The upward magnetic levitation device with automatic weighing and suspension adjustment according to claim 4, characterized in that: The drive motor is mounted on the support frame, and the rotating shaft of the drive motor is connected to the screw via a shaft coupling.

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