Intelligent ring-shaped conveying line based on magnetic suspension technology

Abstract

This invention discloses an intelligent circular conveyor line based on magnetic levitation technology, comprising a conveyor platform with a circular guide rail mounted on it. A mover is slidably mounted on the circular guide rail and is pulled by a magnetic levitation traction mechanism. A workpiece seat is fixedly mounted on the upper end of the mover, and the upper end of the workpiece seat has multiple adsorption holes. A driving groove is formed on the side wall of the workpiece seat, and a negative pressure mechanism that generates negative pressure within the adsorption holes is installed in the driving groove. This invention utilizes the alternating magnetic field generated by each traction coil on the magnetic levitation conveyor line during operation to activate the negative pressure mechanism. This generates negative pressure at the adsorption holes to firmly adsorb the workpiece onto the workpiece seat, effectively preventing displacement due to inertia during workpiece transport and ensuring assembly position accuracy.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation conveyor technology, and in particular to an intelligent circular conveyor based on magnetic levitation technology. Background Technology

[0002] In modern industrial automation and high-flexibility requirements, a magnetic levitation conveyor line has emerged to improve the moving speed, response speed, synchronization and hygiene of the conveyor line. It is mainly driven by a linear motor. Its principle is to lay linear coils on the conveyor platform and set permanent magnets on the mover. The mover is attracted to move forward by controlling the power supply of the coils.

[0003] For circular conveyor lines, such as the intelligent multi-movement magnetic levitation circular conveyor line disclosed in Chinese Patent Publication No. CN219098092U, the workpiece is placed directly on a single magnet slide or a double magnet slide when conveying the workpiece. Magnetic levitation conveyor lines generally have a high conveying speed, reaching 2-4 m / s. Especially at the moment of start-up and stop or when encountering a bend in the circular conveyor line, the workpiece on the slide will shift a short distance due to inertia or centrifugal force. This causes difficulties in picking up and placing workpieces during automated assembly line operations because of the workpiece position shift. If clamps are added to the slide for fixation, frequent loading and unloading are required during assembly line operations, greatly reducing processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing assembly robotic arms, which cause difficulties in picking up, placing, and assembling workpieces due to workpiece position displacement. Therefore, this invention proposes an intelligent circular conveyor line based on magnetic levitation technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smart circular conveyor line based on magnetic levitation technology includes a conveyor platform, a circular guide rail mounted on the conveyor platform, a mover slidably mounted on the circular guide rail, the mover being pulled by a magnetic levitation traction mechanism, a workpiece seat fixedly mounted on the upper end of the mover, a plurality of adsorption holes opened on the upper end of the workpiece seat, a drive groove opened on the side wall of the workpiece seat, and a negative pressure mechanism that generates negative pressure in the adsorption holes is installed in the drive groove.

[0007] The negative pressure mechanism includes a limiting plate, a moving plate, a first self-inductance coil, a second self-inductance coil, an intake pipe, an exhaust pipe, and a telescopic bladder. The limiting plate is fixedly connected to the inner wall of the drive groove, the moving plate is slidably disposed in the drive groove, one end of the telescopic bladder is fixedly connected to the side wall of the moving plate, and the other end of the telescopic bladder is fixedly connected to the side wall of the limiting plate. The first and second self-inductance coils are both fixedly installed in the drive groove and are respectively disposed on both sides of the moving plate. One end of the intake pipe communicates with the adsorption hole, and the other end of the intake pipe communicates with the telescopic bladder. The exhaust pipe communicates with the interior of the telescopic bladder, and a one-way valve is installed in both the intake pipe and the exhaust pipe.

[0008] Preferably, the number of turns of the first self-inductance coil is greater than the number of turns of the second self-inductance coil, and the side wall of the workpiece seat is also provided with an iron core groove, in which an iron core is slidably disposed, and the iron core is pushed to move by a pushing mechanism.

[0009] Preferably, the pushing mechanism includes a first electromagnetic spring, one end of which is fixedly connected to the iron core, and the other end of which is fixedly connected to the inner wall of the iron core groove.

[0010] Preferably, the first self-inductance coil and the second self-inductance coil are connected in series, and fixed contact plates are fixedly connected to the upper and lower inner walls of the drive groove. Two conductive rods are fixedly connected to the side wall of the movable plate, and a movable contact plate is fixedly connected to the end of the conductive rod away from the movable plate. The conductive rod is electrically connected to the series circuit formed by the first self-inductance coil and the second self-inductance coil, and the fixed contact plate is electrically connected to the first electromagnetic spring.

[0011] Preferably, the side wall of the conveyor platform is provided with multiple coil slots, the magnetic levitation traction mechanism includes traction coils installed in each coil slot, and a permanent magnet is fixedly connected to the side wall of the mover. Each traction coil can be energized in sequence to attract the permanent magnet to pull the mover to move along the annular guide rail.

[0012] Preferably, the side wall of the workpiece seat is provided with a plurality of vent holes, each of the vent holes communicating with an adjacent adsorption hole, and the side wall of the workpiece seat is provided with a gate groove, in which an opening and closing mechanism for opening and closing the vent holes is installed.

[0013] Preferably, the opening and closing mechanism includes a sealing plate and a second electromagnetic spring, wherein the sealing plate is slidably disposed in the gate slot, one end of the second electromagnetic spring is fixedly connected to the sealing plate, the other end of the second electromagnetic spring is fixedly connected to the top of the gate slot, and the second electromagnetic spring is directly electrically connected to the series circuit composed of the first self-inductance coil and the second self-inductance coil.

[0014] Preferably, the lower end of the mover is rotatably connected to a plurality of rotating shafts, and the lower end of each rotating shaft is fixedly connected to a guide wheel, which rolls along the side wall of the annular guide rail.

[0015] The present invention has the following beneficial effects:

[0016] 1. By setting up adsorption holes and a negative pressure mechanism, the alternating magnetic field generated by each traction coil on the magnetic levitation conveyor line during operation can be used to start the negative pressure mechanism. In this way, negative pressure can be generated at the adsorption holes to firmly adsorb the workpiece onto the workpiece seat, effectively preventing the workpiece from shifting due to inertia during transport and ensuring the accuracy of the assembly position.

[0017] 2. By setting up a negative pressure mechanism composed of components such as a limit plate, a moving plate, a first self-inductance coil, a second self-inductance coil, an air intake pipe, an exhaust pipe, and a telescopic bladder, and by using the alternating magnetic field generated when the traction coil is working to start the negative pressure mechanism, it is possible to automatically and synchronously start the negative pressure mechanism when the workpiece is moving to attract and fix the workpiece. When the workpiece stops moving, the traction coil stops being energized and the magnetic field disappears, and the negative pressure mechanism also stops operating, thus releasing the attraction to the workpiece. This makes it convenient for various assembly equipment to pick up and put down workpieces for assembly, which is very intelligent and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of an intelligent circular conveyor line based on magnetic levitation technology proposed in this invention;

[0019] Figure 2 This is a schematic diagram of the conveyor platform and its internal magnetic levitation traction mechanism in this invention;

[0020] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0021] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the workpiece holder in this invention;

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B in the diagram;

[0023] Figure 6 This is a schematic diagram of the connection structure of the mover, permanent magnet, rotating shaft and guide wheel in this invention;

[0024] Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point C in the diagram

[0025] In the diagram: 1. Conveyor table, 2. Circular guide rail, 3. Mover, 4. Permanent magnet, 5. Workpiece seat, 6. Adsorption hole, 7. Vent hole, 8. Drive slot, 9. First self-inductance coil, 10. Second self-inductance coil, 11. Iron core slot, 12. First electromagnetic spring, 13. Iron core, 14. Limiting plate, 15. Gate slot, 16. Second electromagnetic spring, 17. Sealing plate, 18. Moving plate, 19. Telescopic bladder, 20. Conductive rod, 21. Moving contact plate, 22. Fixed contact plate, 23. Exhaust pipe, 24. Coil slot, 25. Traction coil, 26. Guide wheel, 27. Rotating shaft, 28. Suction pipe. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Reference Figures 1-7 A smart circular conveyor line based on magnetic levitation technology includes a conveyor platform 1, a circular guide rail 2 installed on the conveyor platform 1, a mover 3 slidably mounted on the circular guide rail 2, and the mover 3 being pulled by a magnetic levitation traction mechanism. The side wall of the conveyor platform 1 has multiple coil slots 24. The magnetic levitation traction mechanism includes traction coils 25 installed in each coil slot 24. It should be noted that the installation, arrangement and power control of the traction coils 25 are the same as those of existing magnetic levitation conveyor lines. Since they are not relevant to the design purpose of this solution, they will not be described in detail here.

[0028] A permanent magnet 4 is fixedly connected to the side wall of the mover 3. Each traction coil 25 can be energized in sequence to attract the permanent magnet 4 to pull the mover 3 to move along the annular guide rail 2.

[0029] Reference Figure 6 The upper end of the mover 3 is fixedly mounted with a workpiece seat 5, and the lower end of the mover 3 is rotatably connected to multiple rotating shafts 27. The lower end of each rotating shaft 27 is fixedly connected to a guide wheel 26, which rolls along the side wall of the annular guide rail 2. It should be noted that by setting the guide wheel 26, the mover 3 can move forward along the annular guide rail 2, reducing forward resistance and noise.

[0030] The upper end of the workpiece seat 5 is provided with multiple adsorption holes 6, and the side wall of the workpiece seat 5 is provided with a drive groove 8. A negative pressure mechanism that generates negative pressure in the adsorption holes 6 is installed in the drive groove 8.

[0031] Reference Figure 4 and Figure 5The negative pressure mechanism includes a limiting plate 14, a movable plate 18, a first self-inductance coil 9, a second self-inductance coil 10, an intake pipe 28, an exhaust pipe 23, and a telescopic bladder 19. The limiting plate 14 is fixedly connected to the inner wall of the drive groove 8. The movable plate 18 is slidably disposed within the drive groove 8. One end of the telescopic bladder 19 is fixedly connected to the side wall of the movable plate 18, and the other end is fixedly connected to the side wall of the limiting plate 14. The first self-inductance coil 9 and the second self-inductance coil 10 are both fixedly installed within the drive groove 8, and are respectively disposed on both sides of the movable plate 18. It should be noted that the movable plate 18 can be made of ferrous material, allowing it to be attracted by the energized first and second self-inductance coils 9 and 10. Additionally, rolling balls are provided at both the upper and lower ends of the movable plate 18 to reduce its lateral movement resistance.

[0032] One end of the suction pipe 28 is connected to the adsorption hole 6, and the other end is connected to the telescopic bladder 19. The exhaust pipe 23 is connected to the inside of the telescopic bladder 19. Both the suction pipe 28 and the exhaust pipe 23 are equipped with one-way valves. It should be noted that the one-way valve in the suction pipe 28 restricts air to flow only unidirectionally from the adsorption hole 6 to the telescopic bladder 19, while the one-way valve in the exhaust pipe 23 restricts air to flow only unidirectionally from the inside of the telescopic bladder 19 to the outside of the exhaust pipe 23. Therefore, when the moving plate 18 of the telescopic bladder 19 is pulled and extended, air can only be drawn in through the suction pipe 28, and when the telescopic bladder 19 is squeezed and contracted by the moving plate 18, air can only be discharged through the exhaust pipe 23. This achieves the technical effect of continuously generating negative pressure in the adsorption hole 6.

[0033] The number of turns of the first self-inductance coil 9 is greater than the number of turns of the second self-inductance coil 10, and the side wall of the workpiece seat 5 is also provided with an iron core groove 11. An iron core 13 is slidably disposed in the iron core groove 11, and the iron core 13 is pushed to move by a pushing mechanism. The pushing mechanism includes a first electromagnetic spring 12, one end of which is fixedly connected to the iron core 13, and the other end of which is fixedly connected to the inner wall of the iron core groove 11. It should be noted that the iron core 13 slides through the left inner wall of the iron core groove 11 and can extend into the drive groove 8. When the iron core 13 moves left and right, it can enter and exit the second self-inductance coil 10.

[0034] The first self-inductance coil 9 and the second self-inductance coil 10 are connected in series. Fixed contact plates 22 are fixedly connected to the upper and lower inner walls of the drive slot 8. Two conductive rods 20 are fixedly connected to the side wall of the moving plate 18. A movable contact plate 21 is fixedly connected to the end of each conductive rod 20 away from the moving plate 18. The conductive rods 20 are electrically connected to the series circuit formed by the first self-inductance coil 9 and the second self-inductance coil 10. The fixed contact plates 22 are electrically connected to the first electromagnetic spring 12. It should be noted that, as... Figure 5As shown, initially, the moving contact plate 21 and the fixed contact plate 22 slide in contact. When an induced current is generated inside the first self-inductance coil 9 and the second self-inductance coil 10, the induced current can be transmitted to the first electromagnetic spring 12 through the conductive rod 20, the moving contact plate 21 and the fixed contact plate 22, and the first electromagnetic spring 12 is energized and contracted.

[0035] The workpiece holder 5 has multiple vent holes 7 on its side wall, each vent hole 7 communicating with an adjacent adsorption hole 6. A gate groove 15 is also provided on the side wall of the workpiece holder 5, and an opening / closing mechanism for the vent holes 7 is installed within the gate groove 15. The opening / closing mechanism includes a sealing plate 17 and a second electromagnetic spring 16. The sealing plate 17 is slidably disposed within the gate groove 15. One end of the second electromagnetic spring 16 is fixedly connected to the sealing plate 17, and the other end is fixedly connected to the top of the gate groove 15. The second electromagnetic spring 16 is directly electrically connected to a series circuit composed of a first self-inductance coil 9 and a second self-inductance coil 10. It should be noted that by switching the second electromagnetic spring 16 on and off, its extension and retraction can be controlled. Since the upper end of the second electromagnetic spring 16 is fixed, this allows the sealing plate 17 to move up and down, thus controlling the position of the sealing plate 17 to open and close the vent holes 7.

[0036] In this invention, similar to existing magnetic levitation conveyor lines, the traction coils 25 in each coil slot 24 are energized by circuit control, which can cause the corresponding traction coils 25 to generate magnetic force and attract the permanent magnets 4 on the mover 3, thus attracting the mover 3 to move along the annular guide rail 2.

[0037] As the mover 3 continuously moves along the annular guide rail 2, the traction coils 25 at different positions need to be energized and de-energized sequentially. This results in a continuously changing magnetic field near the mover 3. Influenced by this alternating magnetic field, the first self-inductance coil 9 and the second self-inductance coil 10 within the drive slot 8 will generate induced magnetic fields and induced currents. The circuit connecting the first self-inductance coil 9 and the second self-inductance coil 10 in series can then transmit the current to the second electromagnetic spring 16. When energized, the second electromagnetic spring 16 will contract, pulling the sealing plate 17 upwards and blocking the vent hole 7, preventing air from entering or exiting it. Figure 7 As shown.

[0038] Furthermore, the circuit of the first self-inductance coil 9 and the second self-inductance coil 10 connected in series also transmits the circuit to the conductive rod 20 and the moving contact plate 21, as shown in the reference. Figure 5 At this time, the moving contact plate 21 and the fixed contact plate 22 are attached together, so the material will be transported through the moving contact plate 21 to the fixed contact plate 22 and finally to the first electromagnetic spring 12. When the first electromagnetic spring 12 is energized, it will also contract. Since the right end of the first electromagnetic spring 12 is fixed, the first electromagnetic spring 12 will pull the iron core to the right into the iron core slot 11 after contraction, so that the iron core is separated from the second self-inductance coil 10.

[0039] Furthermore, since the number of turns of the first self-inductance coil 9 is greater than that of the second self-inductance coil 10, the magnetic field strength generated by the first self-inductance coil 9 will be greater than that of the second self-inductance coil 10. Therefore, the magnetic attraction force of the first self-inductance coil 9 on the moving plate 18 will be greater than that of the second self-inductance coil 10. (Refer to...) Figure 5 As shown, this attracts the movable plate 18 to move to the left, and the conductive rod 20 and the moving contact plate 21 on the left side of the movable plate 18 also move to the left. When the moving contact plate 21 gradually moves to the left and disengages from the fixed contact plate 22, the circuit to the first electromagnetic spring 12 is broken. After the first electromagnetic spring 12 is de-energized, it will automatically extend and recover, thus pushing the iron core 13 to the left. The iron core 13 can be pushed into the drive slot 8 and placed between the second self-inductance coils 10, which greatly enhances the magnetic field strength of the second self-inductance coil 10. At this time, the magnetic field strength of the second self-inductance coil 10 is greater than that of the first self-inductance coil 9. The magnetic attraction force on the moving plate 18 is also greater than the magnetic attraction force of the first self-inductance coil 9 on the moving plate 18. This allows the moving plate 18 to move to the right. After the moving plate 18 moves to the right, the moving contact plate 21 is released from the fixed contact plate 22 again. This allows the first electromagnetic spring 12 to be energized again and to contract again, pulling the iron core 13 back into the iron core slot 11. At this time, the magnetic field strength of the first self-inductance coil 9 is greater than the magnetic field strength of the second self-inductance coil 10, forcing the moving plate 18 to move to the left again. This cycle repeats. When the mover 3 drives the workpiece seat 5 above and the workpiece to move, the moving plate 18 in the drive slot 8 will move back and forth.

[0040] When the moving plate 18 moves to the left, it will pull the telescopic bladder 19 to extend, increasing the internal space of the telescopic bladder 19. This will generate negative pressure and draw air from the suction pipe 28. The suction pipe 28 is connected to the bottom of the suction hole 6, so air can be drawn from the suction hole 6. When the moving plate 18 moves to the right, it will squeeze the telescopic bladder 19, which will discharge air from the exhaust pipe 23. As the moving plate 18 continues to move left and right, it will continuously draw air from the suction hole 6. Thus, when the workpiece is placed on the workpiece seat 5, negative pressure will be continuously generated at the suction hole 6 to firmly adhere the workpiece to the workpiece seat 5, which can prevent the workpiece from shifting due to inertial force during the conveying process.

[0041] Moreover, it is worth mentioning that after the mover 3 drives the workpiece seat 5 and the workpiece on it to the designated position, it will stop moving. At this time, the traction coils 25 in the magnetic levitation traction mechanism will be de-energized. Therefore, the alternating magnetic field generated by the traction coils 25 will also disappear. Consequently, the induced current and induced magnetic field generated by the first self-inductance coil 9 and the second self-inductance coil 10 will also disappear. The moving plate 18 will also stop moving. Therefore, it will no longer draw air from the adsorption hole 6 and generate negative pressure. The second electromagnetic spring 16 will also be de-energized. The second electromagnetic spring 16 will extend and push the sealing plate 17 down to the bottom of the gate slot 15. At this time, the sealing plate 17 will no longer cut off the vent hole 7. External air can enter the adsorption hole 6 through the vent hole 7. The negative pressure in the adsorption hole 6 will immediately disappear, and the adsorption of the workpiece can be released. This makes it convenient for various assembly equipment to pick up and put down the workpiece for assembly, which is very intelligent and convenient.

[0042] In summary, the magnetic levitation ring conveyor line proposed in this invention can automatically activate the negative pressure mechanism during workpiece transport by utilizing the alternating magnetic field generated by the traction coil 25 in the magnetic levitation traction mechanism. This generates negative pressure at the adsorption hole 6 to firmly adsorb the workpiece onto the workpiece seat 5, effectively preventing displacement due to inertia during workpiece transport and ensuring assembly position accuracy. When the transport stops at the designated position, it immediately contacts the adsorption of the workpiece, facilitating the assembly equipment to pick up and place the workpiece for assembly without the need for fixtures, greatly improving processing and assembly efficiency.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart circular conveyor line based on magnetic levitation technology, comprising a conveyor platform (1), wherein a circular guide rail (2) is mounted on the conveyor platform (1), characterized in that, A mover (3) is slidably mounted on the annular guide rail (2). The mover (3) is pulled by a magnetic levitation traction mechanism. A workpiece seat (5) is fixedly mounted on the upper end of the mover (3). Multiple adsorption holes (6) are opened on the upper end of the workpiece seat (5). A drive groove (8) is opened on the side wall of the workpiece seat (5). A negative pressure mechanism that generates negative pressure in the adsorption holes (6) is installed in the drive groove (8). The negative pressure mechanism includes a limiting plate (14), a movable plate (18), a first self-inductance coil (9), a second self-inductance coil (10), an intake pipe (28), an exhaust pipe (23), and a telescopic bladder (19). The limiting plate (14) is fixedly connected to the inner wall of the drive groove (8), the movable plate (18) is slidably disposed within the drive groove (8), one end of the telescopic bladder (19) is fixedly connected to the side wall of the movable plate (18), and the other end of the telescopic bladder (19) is fixedly connected to the side wall of the limiting plate (14). The first self-inductance coil (9), the second self-inductance coil (10), the intake pipe (28), the exhaust pipe (23), and the telescopic bladder (19) are all connected to the inner wall of the drive groove (8). 0) All are fixedly installed in the drive slot (8), and the first self-inductance coil (9) and the second self-inductance coil (10) are respectively set on both sides of the moving plate (18). One end of the suction pipe (28) is connected to the adsorption hole (6), and the other end of the suction pipe (28) is connected to the telescopic bladder (19). The exhaust pipe (23) is connected to the inside of the telescopic bladder (19). One-way valves are installed in both the suction pipe (28) and the exhaust pipe (23). The moving plate (18) is made of iron material and can be attracted by the first self-inductance coil (9) and the second self-inductance coil (10) after being energized.

2. The intelligent circular conveyor line based on magnetic levitation technology according to claim 1, characterized in that, The number of turns of the first self-inductance coil (9) is greater than the number of turns of the second self-inductance coil (10), and the side wall of the workpiece seat (5) is also provided with an iron core groove (11), and an iron core (13) is slidably provided in the iron core groove (11), and the iron core (13) is pushed to move by a pushing mechanism.

3. The intelligent circular conveyor line based on magnetic levitation technology according to claim 2, characterized in that, The pushing mechanism includes a first electromagnetic spring (12), one end of which is fixedly connected to the iron core (13), and the other end of which is fixedly connected to the inner wall of the iron core groove (11).

4. The intelligent circular conveyor line based on magnetic levitation technology according to claim 3, characterized in that, The first self-inductance coil (9) and the second self-inductance coil (10) are connected in series. Fixed contact plates (22) are fixedly connected to the upper and lower inner walls of the drive groove (8). Two conductive rods (20) are fixedly connected to the side wall of the moving plate (18). A movable contact plate (21) is fixedly connected to the end of the conductive rod (20) away from the moving plate (18). The conductive rod (20) is electrically connected to the series circuit formed by the first self-inductance coil (9) and the second self-inductance coil (10). The fixed contact plate (22) is electrically connected to the first electromagnetic spring (12).

5. The intelligent circular conveyor line based on magnetic levitation technology according to claim 1, characterized in that, The side wall of the conveyor (1) is provided with multiple coil slots (24). The magnetic levitation traction mechanism includes traction coils (25) installed in each coil slot (24). A permanent magnet (4) is fixedly connected to the side wall of the mover (3). Each traction coil (25) is energized in sequence to attract the permanent magnet (4) to pull the mover (3) to move along the annular guide rail (2).

6. The intelligent circular conveyor line based on magnetic levitation technology according to claim 4, characterized in that, The side wall of the workpiece seat (5) is provided with a plurality of vent holes (7), each of the vent holes (7) is connected to the adjacent adsorption hole (6), and the side wall of the workpiece seat (5) is provided with a gate groove (15), and the gate groove (15) is provided with an opening and closing mechanism for opening and closing the vent holes (7).

7. The intelligent circular conveyor line based on magnetic levitation technology according to claim 6, characterized in that, The opening and closing mechanism includes a sealing plate (17) and a second electromagnetic spring (16). The sealing plate (17) is slidably disposed in the gate slot (15). One end of the second electromagnetic spring (16) is fixedly connected to the sealing plate (17), and the other end of the second electromagnetic spring (16) is fixedly connected to the top of the gate slot (15). The second electromagnetic spring (16) is directly electrically connected to the series circuit composed of the first self-inductance coil (9) and the second self-inductance coil (10).

8. The intelligent circular conveyor line based on magnetic levitation technology according to claim 1, characterized in that, The lower end of the mover (3) is rotatably connected to a plurality of rotating shafts (27), and the lower end of each rotating shaft (27) is fixedly connected to a guide wheel (26), which rolls along the side wall of the annular guide rail (2).

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