Magnetic suspension shield device

Abstract

The invention discloses a magnetic suspension shield device, and relates to the field of magnetic suspension devices, the magnetic suspension shield device comprises a base, a PCB, an annular neodymium magnet, an electromagnetic coil, a high polymer material shield and a Hall sensor assembly, the base is made of a magnetic material, the annular neodymium magnet is positioned and installed at the top of the base, and the annular neodymium magnet is magnetically attached to the opposite surface of the base; the PCB is fixedly connected in an installation groove reserved in the top of the base and located in the center of the annular neodymium magnet, the electromagnetic coils and the Hall sensor assembly are installed on the PCB, and the multiple electromagnetic coils are annularly arranged on the peripheral side of the Hall sensor assembly in a surrounding mode. The high polymer material shield is arranged on the side, away from the base, of the annular neodymium magnet in a suspended mode, and the electromagnetic coil and the Hall sensor assembly are electrically connected with the PCB. The shield is simple in structure and convenient to use, the suspension performance of the shield can be effectively improved, and meanwhile the service life of the shield is prolonged.

Description

Technical Field

[0001] The invention relates to the field of magnetic suspension devices, and in particular to a magnetic suspension shield device. Background Art

[0002] In many work scenarios, workers are often exposed to severe threats from the external environment, such as the high temperatures and flames faced by firefighters during firefighting missions, or the radiation risks encountered by scientific researchers when they come into contact with radioactive materials. Traditional protective measures mostly rely on heavy physical equipment. Although they can effectively resist external hazards, they inevitably cause the disadvantage of restricted movement of workers.

[0003] Magnetic levitation technology achieves stable suspension of objects in a contactless state through the use of magnetic field forces, but the suspension performance of existing magnetic levitation devices is poor, especially when maintaining the suspended body in a vertical posture, it faces problems of poor stability and slow response speed.

[0004] Therefore, how to provide a magnetic levitation shield device with a simple structure, easy to use, and able to effectively improve the suspension performance of the shield while extending the service life of the shield has become a technical problem that needs to be urgently solved by personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a magnetic suspension shield device which has a simple structure and is easy to use, and can effectively improve the suspension performance of the shield and at the same time extend the service life of the shield.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a magnetic suspension shield device, comprising a base, a PCB circuit board, an annular neodymium magnet, an electromagnetic coil, a polymer shield and a Hall sensor assembly, wherein the base is made of magnetic material, the annular neodymium magnet is positioned and installed on the top of the base, and the annular neodymium magnet and the opposite surface of the base are magnetically fitted, the PCB circuit board is fixedly connected to a mounting groove reserved at the top of the base, and the PCB circuit board is located at the center of the annular neodymium magnet, the electromagnetic coil and the Hall sensor assembly are both installed on the PCB circuit board, and a plurality of the electromagnetic coils are arranged in an annular shape around the circumference of the Hall sensor assembly, the polymer shield is suspended and arranged on a side of the annular neodymium magnet away from the base, and the electromagnetic coil and the Hall sensor assembly are both electrically connected to the PCB circuit board.

[0008] Preferably, the Hall sensor assembly includes a first Hall sensor and a second Hall sensor, the first Hall sensor and the second Hall sensor are arranged vertically, and the normals of the detection surfaces of the first Hall sensor and the second Hall sensor are perpendicular to the plumb line between the polymer material shield and the annular neodymium magnet.

[0009] Preferably, a positioning ring protrusion is provided on the top of the base, and the annular neodymium magnet is sleeved and mounted on the positioning ring protrusion.

[0010] Preferably, an annular groove is provided on the top of the base, and the annular neodymium magnet is embedded in the annular groove.

[0011] Preferably, the size of the annular neodymium magnet is set to an outer diameter of 100 mm, an inner diameter of 50 mm, and a height of 10 mm.

[0012] Preferably, the cross-sectional size of the electromagnetic coil is set to 20 mm, and the length of the electromagnetic coil is set to 22 mm.

[0013] Preferably, it also includes a power interface, which is arranged on one side of the base and is electrically connected to the PCB circuit board.

[0014] Preferably, the polymer material shield comprises a shield body and a permanent magnet, the permanent magnet is embedded in the shield body, and the opposite magnetic poles of the permanent magnet and the annular neodymium magnet are the same.

[0015] Preferably, the shield body is made of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin material.

[0016] The method for preparing the polymer material shield comprises the following steps:

[0017] Step 1: Design the mold. According to the design requirements of the magnetic suspension shield device, accurately design the mold structure to ensure that there is a space inside the mold that matches the shape of the shield body, and preset positioning grooves or positioning holes for placing permanent magnets in the mold to ensure that the permanent magnets can be accurately embedded in the predetermined position of the shield body;

[0018] Step 2: Place the permanent magnet in the positioning slot or positioning hole of the mold to ensure that the position, direction and polarity of the permanent magnet meet the design requirements;

[0019] Step 3: Prepare polymer materials: select any one of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin, and heat it to a liquid or molten state so as to be injected into the mold;

[0020] Step 4: Filling the polymer material: injecting the liquid or molten polymer material into the mold through an injection molding or casting process to ensure that the polymer material completely wraps the permanent magnet and fills the space inside the mold;

[0021] Step 5: Curing and demoulding: After the polymer material is cooled and solidified, the mold is opened to complete the preparation of the polymer material shield.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are:

[0023] The present invention provides a magnetic levitation shield device with a simple structure and easy use. The annular neodymium magnet is used to effectively improve the suspension performance of the shield. At the same time, the shield is made by combining polymer materials with permanent magnets, which can effectively improve the overall mechanical properties of the polymer material shield, making it have higher impact resistance and fatigue resistance, thereby extending the service life of the shield and reducing the maintenance cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of a magnetic suspension shield device of the present invention;

[0026] Figure 2 It is a schematic diagram of the connection structure of the annular neodymium magnet, the electromagnetic coil and the PCB circuit board of the present invention;

[0027] Figure 3 The figure is a distribution diagram of magnetic lines of force between the annular neodymium magnet and the polymer material shield when the polymer material shield of the present invention is in balanced suspension.

[0028] Explanation of the accompanying drawings: 1. Base; 2. PCB circuit board; 3. Ring-shaped neodymium magnet; 4. Electromagnetic coil; 5. Polymer material shield; 6. Hall sensor assembly; 61. First Hall sensor; 62. Second Hall sensor. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] like Figure 1-3As shown, it includes a base 1, a PCB circuit board 2, an annular neodymium magnet 3, an electromagnetic coil 4, a polymer material shield 5 and a Hall sensor component 6. The base 1 is made of magnetic material, the annular neodymium magnet 3 is positioned and installed on the top of the base 1, and the annular neodymium magnet 3 is magnetically fitted with the opposite surface of the base 1, the PCB circuit board 2 is fixedly connected to the installation groove reserved at the top of the base 1, and the PCB circuit board 2 is located at the center of the annular neodymium magnet 3, the electromagnetic coil 4 and the Hall sensor component 6 are both installed on the PCB circuit board 2, and a plurality of the electromagnetic coils 4 are arranged in a ring shape around the circumference of the Hall sensor component 6, the polymer material shield 5 is suspended on the side of the annular neodymium magnet 3 away from the base 1, and the electromagnetic coil 4 and the Hall sensor component 6 are both electrically connected to the PCB circuit board 2.

[0031] Specifically, the annular neodymium magnet 3 is used to provide a power source for the polymer material shield 5 to suspend upward, and the plurality of electromagnetic coils 4 arranged in an annular shape are used to adjust the suspension direction of the polymer material shield 5 .

[0032] Specifically, the Hall sensor assembly 6 includes a first Hall sensor 61 and a second Hall sensor 62, the first Hall sensor 61 and the second Hall sensor 62 are arranged vertically, and the normals of the detection surfaces of the first Hall sensor 61 and the second Hall sensor 62 are perpendicular to the plumb line between the polymer material shield 5 and the annular neodymium magnet 3.

[0033] Specifically, when the polymer material shield 5 is stably suspended in the central axis direction of the annular neodymium magnet 3, the annular neodymium magnet 3, the electromagnetic coil 4 and the permanent magnet inside the polymer material shield 5 together constitute a magnetic field system. At this time, the magnetic lines of force of the magnetic field system are mainly distributed along the plumb line direction, forming a relatively stable magnetic field environment. In this state, the first Hall sensor 61 and the second Hall sensor 62 are located in the area where the magnetic lines of force are evenly distributed, so the value of the magnetic lines of force cannot be monitored.

[0034] Specifically, when the suspension position of the polymer material shield 5 is offset, the distribution direction of the magnetic field lines of the entire magnetic field system will change significantly, causing the magnetic field lines to no longer be strictly distributed along the plumb line direction, but to have a certain inclination or curvature. This change in the distribution of magnetic field lines will directly affect the magnetic flux lines values ​​monitored by the first Hall sensor 61 and the second Hall sensor 62.

[0035] Specifically, when the polymer material shield 5 deviates in a certain direction, the Hall sensor in that direction will first sense the change in the value of the magnetic flux line and generate a corresponding electrical signal. The microcontroller on the PCB circuit board 2 will read the electrical signal values ​​of the first Hall sensor 61 and the second Hall sensor 62 in real time, and analyze the change trend and amplitude of these signals through an algorithm. Once the polymer material shield 5 is detected to be deviated, the microcontroller will quickly adjust the working state of the electromagnetic coil 4 at the corresponding position according to the monitoring results, and generate a horizontal magnetic field force opposite to the deflection direction of the polymer material shield 5 by changing the direction and magnitude of the current in the electromagnetic coil 4. The magnetic field force acts on the polymer material shield 5, prompting it to return to the central axis, thereby achieving the purpose of self-correction.

[0036] Specifically, a positioning ring protrusion is provided on the top of the base 1, and the annular neodymium magnet 3 is sleeved and installed on the positioning ring protrusion.

[0037] Specifically, an annular groove is provided on the top of the base 1, and the annular neodymium magnet 3 is embedded in the annular groove.

[0038] Specifically, the size of the annular neodymium magnet 3 is set to an outer diameter of 100 mm, an inner diameter of 50 mm, and a height of 10 mm.

[0039] Specifically, the cross-sectional size of the electromagnetic coil 4 is set to 20 mm, and the length of the electromagnetic coil 4 is set to 22 mm.

[0040] Specifically, it also includes a power interface, which is arranged on one side of the base 1 and is electrically connected to the PCB circuit board 2 .

[0041] Specifically, the polymer material shield 5 includes a shield body and a permanent magnet. The permanent magnet is embedded in the shield body, and the opposite magnetic poles of the permanent magnet and the annular neodymium magnet 3 are the same.

[0042] Specifically, the shield body is made of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin material.

[0043] The method for preparing the polymer material shield 5 comprises the following steps:

[0044] Step 1: Design the mold. According to the design requirements of the magnetic suspension shield device, accurately design the mold structure to ensure that there is a space inside the mold that matches the shape of the shield body, and preset positioning grooves or positioning holes for placing permanent magnets in the mold to ensure that the permanent magnets can be accurately embedded in the predetermined position of the shield body;

[0045] Step 2: Place the permanent magnet in the positioning slot or positioning hole of the mold to ensure that the position, direction and polarity of the permanent magnet meet the design requirements;

[0046] Step 3: Prepare polymer materials: select any one of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin, and heat it to a liquid or molten state so as to be injected into the mold;

[0047] Step 4: Filling the polymer material: injecting the liquid or molten polymer material into the mold through an injection molding or casting process to ensure that the polymer material completely wraps the permanent magnet and fills the space inside the mold;

[0048] Step 5: Curing and demoulding After the polymer material is cooled and solidified, the mold is opened to complete the preparation of the polymer material shield 5 .

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A magnetic suspension shield device, characterized in that: The invention comprises a base (1), a PCB circuit board (2), an annular neodymium magnet (3), an electromagnetic coil (4), a polymer material shield (5) and a Hall sensor assembly (6), wherein the base (1) is made of magnetic material, the annular neodymium magnet (3) is positioned and mounted on the top of the base (1), and the annular neodymium magnet (3) and the opposite surface of the base (1) are magnetically fitted, the PCB circuit board (2) is fixedly connected to a mounting groove reserved at the top of the base (1), and the PCB circuit board (2) is located at the center of the annular neodymium magnet (3), the electromagnetic coil (4) and the Hall sensor assembly (6) are both mounted on the PCB circuit board (2), and a plurality of the electromagnetic coils (4) are arranged in an annular shape around the circumference of the Hall sensor assembly (6), the polymer material shield (5) is suspended and arranged on a side of the annular neodymium magnet (3) away from the base (1), and the electromagnetic coil (4) and the Hall sensor assembly (6) are both electrically connected to the PCB circuit board (2).

2. A magnetic suspension shield device according to claim 1, characterized in that: The Hall sensor assembly (6) comprises a first Hall sensor (61) and a second Hall sensor (62), wherein the first Hall sensor (61) and the second Hall sensor (62) are arranged vertically, and the normals of the detection surfaces of the first Hall sensor (61) and the second Hall sensor (62) are perpendicular to the plumb line between the polymer material shield (5) and the annular neodymium magnet (3).

3. A magnetic suspension shield device according to claim 1, characterized in that: A positioning ring protrusion is provided on the top of the base (1), and the annular neodymium magnet (3) is sleeved and mounted on the positioning ring protrusion.

4. The magnetic suspension shield device according to claim 1, characterized in that: The top of the base (1) is provided with an annular groove, and the annular neodymium magnet (3) is embedded in the annular groove.

5. A magnetic suspension shield device according to claim 3 or 4, characterized in that: The dimensions of the annular neodymium magnet (3) are set to have an outer diameter of 100 mm, an inner diameter of 50 mm, and a height of 10 mm.

6. The magnetic suspension shield device according to claim 1, characterized in that: The cross-sectional dimension of the electromagnetic coil (4) is set to 20 mm, and the length of the electromagnetic coil (4) is set to 22 mm.

7. The magnetic suspension shield device according to claim 1, characterized in that: It also comprises a power interface, which is arranged on one side of the base (1) and is electrically connected to the PCB circuit board (2).

8. The magnetic suspension shield device according to claim 1, characterized in that: The polymer material shield (5) comprises a shield body and a permanent magnet. The permanent magnet is embedded in the shield body, and the opposite magnetic poles of the permanent magnet and the annular neodymium magnet (3) are the same.

9. A magnetic suspension shield device according to claim 8, characterized in that: The shield body is made of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin material.

10. A magnetic suspension shield device according to claim 9, characterized in that: The method for preparing the polymer material shield (5) comprises the following steps: Step 1: Design the mold. According to the design requirements of the magnetic suspension shield device, accurately design the mold structure to ensure that there is a space inside the mold that matches the shape of the shield body, and preset positioning grooves or positioning holes for placing permanent magnets in the mold to ensure that the permanent magnets can be accurately embedded in the predetermined position of the shield body; Step 2: Place the permanent magnet in the positioning slot or positioning hole of the mold to ensure that the position, direction and polarity of the permanent magnet meet the design requirements; Step 3: Prepare polymer materials: select any one of polycarbonate, polyethylene terephthalate, polyimide, polystyrene, polypropylene, polyurethane, thermoplastic elastomer, polytetrafluoroethylene, polyetheretherketone or epoxy resin, and heat it to a liquid or molten state so as to be injected into the mold; Step 4: Filling the polymer material: injecting the liquid or molten polymer material into the mold through an injection molding or casting process to ensure that the polymer material completely wraps the permanent magnet and fills the space inside the mold; Step 5: Curing and demoulding After the polymer material is cooled and solidified, the mold is opened to complete the preparation of the polymer material shield (5).

Images