Magnetic suspension type guide rail structure

Abstract

The invention discloses a magnetic suspension type guide rail structure, which belongs to the technical field of magnetic suspension type guide rails, and comprises a coil slide rail, a permanent magnet slide block assembly, an electric signal processor, a visual signal converter and an induction coil, a plurality of visual sensors are arranged on the outer side of the coil sliding rail, a coil winding is arranged on the inner side of the coil sliding rail, the permanent magnet sliding block assembly is slidably connected to the outer side of the coil sliding rail, and a plurality of visual sensing grooves are formed in the inner side of the permanent magnet sliding block assembly. The visual sensing groove is matched with the visual sensor to adjust a gap between the permanent magnet sliding block assembly and the coil sliding rail in multiple degree-of-freedom directions; the electric signal processor and the visual signal converter are arranged on the inner side of the top of the permanent magnet sliding block assembly. The induction coil is arranged on the inner side of the permanent magnet sliding block assembly and matched with the visual sensor. By means of the design, the problems that an existing high-performance guide rail column such as an air floating guide rail cannot adjust gaps by itself and cannot work in a vacuum environment, and the national requirements for high rigidity, straightness and bearing capacity are difficult to meet can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic levitation guide rails, and in particular relates to a magnetic levitation guide rail structure. Background Art

[0002] The magnetic levitation guide achieves stable suspension of objects by controlling the size of the electromagnetic force. It has the advantages of fast response speed, no friction, high rigidity, low power consumption, low cost and high cleanliness. Compared with traditional mechanical linear guides, the magnetic levitation guide has no mechanical contact, avoids wear due to friction, increases service life and reduces maintenance costs. Compared with air-floating guides, it has the advantages of fast response speed, high control accuracy, active gap adjustment in the face of interference, high rigidity, good straightness, and good performance in high rigidity. It can be used in vacuum working environments, high cleanliness environments and other occasions. Therefore, magnetic levitation guides are gradually being used in the field of high-end equipment.

[0003] However, the existing magnetic levitation technology can often only achieve magnetic levitation bearing at the bottom of the guide rail. For example, the invention patent application with publication number CN111571242A discloses an active magnetic levitation guide rail platform and control method, which uses magnetic levitation technology to achieve magnetic levitation guidance, that is, sensors are only arranged in the supporting direction, the suspension gap on both sides of the slide box is uncontrollable, and the stiffness and straightness of the guide rail cannot be guaranteed; there is a problem of short life; at the same time, the method of regulating the gap by electrical signals is easily affected by voltage instability when turning on and off the power, which reduces the accuracy. Moreover, the previous signal transmission mostly uses magnetic signals to convert into electrical signals. However, in some areas with strong magnetic interference, the accuracy of magnetic signal transmission will be reduced, which often leads to guide rail failure.

[0004] In view of the deficiencies in the prior art, the present invention provides a magnetic levitation guide rail structure to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a magnetic levitation guide rail structure that can solve the problems that existing high-performance guide rails such as air-floating guide rails cannot adjust the gap by themselves, cannot operate in a vacuum environment, and are difficult to meet the national requirements for high rigidity, straightness and load capacity.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0007] A magnetic levitation guide rail structure, comprising:

[0008] A coil slide rail, wherein a plurality of visual sensors are arranged on the outer side of the coil slide rail, and a coil winding is arranged on the inner side thereof, and the coil winding generates a directional magnetic field when energized;

[0009] A permanent magnet slider assembly, which is slidably connected to the outside of the coil slide rail, and has a plurality of visual sensing grooves formed on its inner side; each of the visual sensing grooves cooperates with each of the visual sensors to adjust the gaps in multiple degrees of freedom directions between the permanent magnet slider assembly and the coil slide rail;

[0010] An electrical signal processor and a visual signal converter, both of which are arranged on the inner side of the top of the permanent magnet slider assembly;

[0011] And an induction coil, which is arranged on the inner side of the permanent magnet slider assembly, cooperates with the visual sensor, converts the visual signal into an electrical signal through the visual signal converter, and transmits it to the electrical signal processor.

[0012] Preferably, the permanent magnet slider assembly includes four detachably connected square panels; the four square panels include:

[0013] Two side electromagnet panels;

[0014] One bottom electromagnet panel;

[0015] And one top docking panel;

[0016] Wherein, the four square panels are connected to each other to form a permanent magnet slider frame, and the permanent magnet slider frame moves along the X degree of freedom direction under the action of the directional magnetic field generated by the coil winding.

[0017] Preferably, a plurality of visual sensors are provided, and they are respectively arranged on the two side parts and the bottom of the coil slide rail.

[0018] Preferably, a plurality of induction coils are provided, and they are respectively arranged on the two side electromagnet panels and the bottom electromagnet panel.

[0019] Preferably, the current in the coil winding is an alternating current, and the change of the current direction realizes the change of the directional magnetic field, so as to control the movement direction of the permanent magnet slider assembly.

[0020] Preferably, the color of the induction coil is different from the color of the inner wall of the permanent magnet slider assembly.

[0021] Preferably, it further includes a Hall element, which is arranged at the bottom of the coil slide rail for detecting the magnetic field intensity and providing a magnetic field feedback signal.

[0022] Preferably, a plurality of coil windings are provided, and they are respectively symmetrically and linearly arrayed on the inner sides of both sides of the coil slide rail.

[0023] Preferably, a plurality of threaded holes are further provided on the top docking panel.

[0024] Preferably, the multiple degrees of freedom directions include: Y degree of freedom direction and Z degree of freedom direction.

[0025] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0026] 1. In the present invention, visual sensors are provided on both sides and the bottom of the coil slide rail. During the movement, the visual sensors in the left, right, and lower directions respectively analyze the visual signals of the visual sensing grooves in the opposite directions, realizing high-precision gap adjustment in multiple degrees of freedom directions between the permanent magnet slider assembly and the coil slide rail, and solving the drawback in the prior art that only bottom gap adjustment can be achieved; at the same time, through the magnetic field feedback control provided by the visual sensors and Hall elements, the high stiffness and straightness of the guide rail are ensured.

[0027] 2. By introducing visual signals and magnetic flux feedback, the present solution not only improves the anti-interference ability of the system, but also enhances the dynamic response performance; in the case of unstable voltage, the system can maintain a stable suspension height and gap control through real-time feedback and dynamic adjustment.

[0028] 3. The present invention adopts the combination of visual sensors and visual sensing grooves to replace the traditional transmission method of converting magnetic signals into electrical signals, that is, the visual sensors capture the position information of the visual sensing grooves, convert the mechanical position signals into visual signals, and then convert the visual signals into electrical signals through a visual signal converter; improving the gap self-regulation ability of the permanent magnet slider and the anti-interference ability in a strong magnetic field environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention.

[0030] Figure 2 is a schematic structural diagram of the permanent magnet slider assembly of the present invention.

[0031] Wherein:

[0032] 1. Permanent magnet slider assembly; 11. Side electromagnet panel; 12. Bottom electromagnet panel; 13. Top docking panel; 131. Threaded hole; 2. Coil slide rail; 3. Induction coil; 4. Coil winding; 5. Visual sensor; 6. Visual sensing groove; 7. Electrical signal processor; 8. Visual signal converter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and should not be used to limit the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0036] Embodiment 1

[0037] Reference Figure 1 And Figure 2 , this embodiment provides a maglev guide rail structure, including:

[0038] A coil slide rail 2, on the outer side of the coil slide rail 2, there are provided a plurality of visual sensors 5, and on its inner side, there is a coil winding 4. After the coil winding 4 is energized, it generates a directional magnetic field;

[0039] A permanent magnet slider assembly 1, the permanent magnet slider assembly 1 is slidably connected to the outer side of the coil slide rail 2, and on its inner side, there are provided a plurality of visual sensing grooves 6; each of the visual sensing grooves 6 cooperates with each of the visual sensors 5 to adjust the gaps in multiple degrees of freedom directions between the permanent magnet slider assembly 1 and the coil slide rail 2;

[0040] An electrical signal processor 7 and a visual signal converter 8, both the electrical signal processor 7 and the visual signal converter 8 are provided on the inner top of the permanent magnet slider assembly 1;

[0041] And an induction coil 3, the induction coil 3 is provided on the inner side of the permanent magnet slider assembly 1, it cooperates with the visual sensors 5, converts the visual signal into an electrical signal through the visual signal converter 8, and transmits it to the electrical signal processor 7.

[0042] Specifically, the permanent magnet slider assembly 1 includes four detachably connected square panels; the four square panels include:

[0043] Two side electromagnet panels 11;

[0044] One bottom electromagnet panel 12;

[0045] And one top docking panel 13;

[0046] Among them, the four square panels are interconnected to form a permanent magnet slider frame, and the permanent magnet slider frame moves along the X-degree-of-freedom direction under the action of the directional magnetic field generated by the coil winding 4.

[0047] Specifically, both the electrical signal processor 7 and the visual signal converter 8 are provided inside the top docking panel 13.

[0048] Furthermore, a plurality of visual sensors 5 are provided, and they are respectively provided on two side parts and the bottom of the coil slide rail 2.

[0049] Furthermore, a plurality of induction coils 3 are provided, and they are respectively provided on the two side electromagnet panels 11 and the bottom electromagnet panel 12.

[0050] In order to realize the change of the magnetic field direction by changing the current direction to adapt to complex working conditions, in this embodiment, the current in the coil winding 4 is an alternating current, and the change of the current direction realizes the change of the directional magnetic field, thereby controlling the movement direction of the permanent magnet slider assembly 1.

[0051] In order to facilitate the rapid identification and capture by the visual sensor 5, in this embodiment, the color of the induction coil 3 is different from the color of the inner wall of the permanent magnet slider assembly 1.

[0052] In order to detect the magnetic field intensity in real time and provide a magnetic field feedback signal for accurately controlling the suspension height and running stability of the permanent magnet slider assembly 1, in this embodiment, a Hall element is further included, and the Hall element is provided at the bottom of the coil slide rail 2 for detecting the magnetic field intensity and providing a magnetic field feedback signal.

[0053] In order to achieve a more uniform magnetic field distribution and improve the suspension stability and running accuracy, in this embodiment, a plurality of coil windings 4 are provided, and they are respectively symmetrically and linearly arrayed inside both sides of the coil slide rail 2.

[0054] In order to facilitate the connection between the permanent magnet slider assembly 1 and other components, in this embodiment, a plurality of threaded holes 131 are further provided on the top docking panel 13.

[0055] It should be noted that the four square panels adopt a detachable design, which enhances the flexibility of the permanent magnet slider assembly and is more convenient for installation and maintenance.

[0056] Specifically, the multiple degrees of freedom directions include: the Y-degree of freedom direction and the Z-degree of freedom direction. The Y-degree of freedom direction and the Z-degree of freedom direction respectively correspond to the X-degree of freedom direction, and the X-degree of freedom direction is the direction in which the permanent magnet slider assembly 1 moves.

[0057] During operation, the induction coil 3 located on the permanent magnet slider assembly 1 is energized, so that an attractive force is generated between it and the magnetic field in the coil direction of the coil slide rail 2, realizing the suspension of the permanent magnet slider assembly 1. The current magnitude of the induction coil 3 is controlled by converting the visual signal transmitted by the visual sensor into an electrical signal, and precise control of the Y-degree of freedom, Z-degree of freedom, and X-degree of freedom of the permanent magnet slider assembly 1 will be achieved;

[0058] The coil winding 4 located on the coil slide rail 2 is energized. After the coil winding 4 is energized, a movable magnetic field in a direction will be generated. The magnetic field in the direction moves linearly along the X-degree of freedom direction. The magnetic field generated by the permanent magnet on the permanent magnet slider assembly 1 interacts with the magnetic field in the direction to generate a traction force. The traction force drives the permanent magnet slider assembly 1 to move linearly along the magnetic field direction on the coil slide rail 2 along the X-degree of freedom. In summary, the self-driving of the permanent magnet slider assembly 1 is realized.

[0059] Working principle: This solution mainly involves the following links:

[0060] 1. Visual signal detection and feedback

[0061] The visual sensor 5 first obtains the gap information between the permanent magnet slider assembly 1 and the coil slide rail 2 by detecting the position change of the visual sensing groove 6; then converts the captured visual signal into an electrical signal through the visual signal converter 8 and transmits it to the electrical signal processor 7; finally, the electrical signal processor 7 dynamically adjusts the current in the induction coil 3 according to the visual signal feedback, thereby changing the magnetic field strength between the permanent magnet slider assembly 1 and the coil slide rail 2, and realizing high-precision gap adjustment.

[0062] 2. Electromagnetic feedback control

[0063] After an alternating current is passed through the coil winding 4 on the inner side of the coil slide rail 2, a magnetic field in a direction is generated, causing the permanent magnet slider assembly 1 to move along the X-degree of freedom direction under the action of the magnetic field; then the magnetic field strength is detected in real time through the Hall element provided at the bottom of the coil slide rail 2; the Hall element converts the magnetic field signal into an electrical signal and transmits it to the electrical signal processor 7; finally, the electrical signal processor 7 dynamically adjusts the current in the coil winding 4 according to the magnetic field signal fed back by the Hall element to ensure the stability and uniformity of the magnetic field strength, thereby realizing the stable suspension of the permanent magnet slider assembly 1.

[0064] 3. Multiple feedback mechanisms and dynamic adjustment

[0065] The system combines visual signals and magnetic field feedback signals to form a multiple feedback mechanism. Among them, the visual signals are used for high-precision gap detection, and the magnetic field feedback signals are used to adjust the magnetic field intensity in real time. The electrical signal processor 7 adopts an adaptive control algorithm (such as active disturbance rejection control or PID control) to dynamically adjust the currents in the induction coil 3 and the coil winding 4 according to the real-time feedback signals, ensuring that the system can still operate stably under voltage fluctuations and external disturbances. Through the synergistic effect of visual signals and magnetic field feedback, the permanent magnet slider assembly 1 enables the system to quickly respond to gap changes and magnetic field fluctuations, improving the dynamic response speed and anti-interference ability.

[0066] 4. Structural Design and Flexibility

[0067] The permanent magnet slider assembly 1 is composed of four detachable square panels, including two side electromagnet panels 11, a bottom electromagnet panel 12, and a top docking panel 13. The induction coil 3 is arranged inside the permanent magnet slider assembly 1 and cooperates with the visual induction groove 6 to achieve multi-degree-of-freedom suspension and motion control.

[0068] Summary of the working principle: Through the combination of visual signal detection and electromagnetic feedback control, this solution realizes high-precision suspension gap adjustment and stable magnetic field control. The visual signals are used for high-precision gap detection, and the magnetic field feedback signals are used to adjust the magnetic field intensity in real time. The two work together to dynamically adjust the current through an adaptive control algorithm, ensuring that the system can still operate stably under voltage fluctuations and external disturbances. This design not only improves the anti-interference ability of the system but also enhances the dynamic response performance, meeting the application requirements of high-performance magnetic levitation guide rails in complex environments.

[0069] In summary, through the above design, the magnetic levitation guide rail structure of the present invention is significantly superior to traditional air-floating guide rails and mechanical linear guide rails in terms of performance, precision, and reliability, and can meet the country's requirements for high stiffness, straightness, and load capacity of high-performance linear guide rails.

[0070] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic levitation guide rail structure, characterized in that: include: A coil slide rail (2), wherein a plurality of visual sensors (5) are provided on the outer side of the coil slide rail (2), and a coil winding (4) is provided on the inner side thereof, and the coil winding (4) generates a directional magnetic field when energized; A permanent magnet slider assembly (1), wherein the permanent magnet slider assembly (1) is slidably connected to the outer side of the coil slide rail (2), and a plurality of visual sensing grooves (6) are provided on the inner side of the permanent magnet slider assembly (1); each of the visual sensing grooves (6) cooperates with each of the visual sensors (5) to adjust the gap between the permanent magnet slider assembly (1) and the coil slide rail (2) in multiple degrees of freedom directions; An electrical signal processor (7) and a visual signal converter (8), wherein the electrical signal processor (7) and the visual signal converter (8) are both arranged on the inner side of the top of the permanent magnet slider assembly (1); and an induction coil (3), wherein the induction coil (3) is arranged on the inner side of the permanent magnet slider assembly (1), cooperates with the visual sensor (5), converts the visual signal into an electrical signal through the visual signal converter (8), and transmits the electrical signal to the electrical signal processor (7).

2. The magnetic levitation guide rail structure according to claim 1, characterized in that: The permanent magnet slider assembly (1) comprises four detachably connected square panels; the four square panels comprise: Two side electromagnet panels (11); a bottom electromagnet panel (12); and a top docking panel (13); The four square panels are interconnected to form a permanent magnet slider frame, and the permanent magnet slider frame moves along the X degree of freedom direction under the action of the directional magnetic field generated by the coil winding (4).

3. The magnetic levitation guide rail structure according to claim 1, characterized in that: There are a plurality of visual sensors (5), which are respectively arranged on the two side portions and the bottom portion of the coil slide rail (2).

4. The magnetic levitation guide rail structure according to claim 2, characterized in that: The induction coils (3) are provided in plurality and are respectively arranged on two side electromagnet panels (11) and a bottom electromagnet panel (12).

5. The magnetic levitation guide rail structure according to claim 1, characterized in that: The current in the coil winding (4) is alternating current, which achieves a change in the direction of the magnetic field by changing the direction of the current, thereby controlling the movement direction of the permanent magnet slider assembly (1).

6. The magnetic levitation guide rail structure according to claim 4, characterized in that: The color of the induction coil (3) is different from the color of the inner wall of the permanent magnet slider assembly (1).

7. The magnetic levitation guide rail structure according to claim 1, characterized in that: It also comprises a Hall element, which is arranged at the bottom of the coil slide rail (2) and is used to detect the magnetic field strength and provide a magnetic field feedback signal.

8. The magnetic levitation guide rail structure according to claim 1, characterized in that: The coil windings (4) are provided in plurality and are symmetrically and linearly arrayed inside the two sides of the coil slide rail (2).

9. The magnetic levitation guide rail structure according to claim 2, characterized in that: The top docking panel (13) is also provided with a plurality of threaded holes (131).

10. The magnetic levitation guide rail structure according to claim 1, characterized in that: The multiple degrees of freedom directions include: a Y degree of freedom direction and a Z degree of freedom direction.

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