Magnetic coupling

Abstract

The utility model discloses magnetic coupling, including the casing, and the casing is hollow barrel -shaped, the conductor disc is fixed setting in the inside circumference of casing, and the conductor disc rotates with the casing, the rotor structure is set up in the inside middle part of casing, and the outer periphery of rotor structure and the inner periphery gap of conductor disc setting, still include the composite lubricating layer, and the composite lubricating layer sets up in the inner wall of conductor disc or the outer periphery of rotor structure. According to the utility model's magnetic coupling, utilize the low characteristic of dry friction coefficient of composite lubricating layer to realize lubrication function, when the magnetic coupling because of the rotation and distribution tolerance or long -time use aging or casing vibration leads to internal component loose to cause the direct contact of conductor disc and rotor structure, the composite lubricating layer can replace conductor disc or rotor structure and one of them direct contact, and the composite lubricating layer has the low characteristic of dry friction coefficient, can guarantee low -speed condition under the contact of both still can maintain relative motion and realize normal work.

Description

Technical Field

[0001] This utility model relates to the field of connecting device technology, and in particular to a magnetic coupling. Background Technology

[0002] Magnetic couplings use an air gap instead of a shaft to transmit torque without contact. Both the driving and driven ends are equipped with permanent magnets or conductor disks. During rotation, the magnetic fields interact, allowing torque to pass through the isolation enclosure. The working principle of a magnetic coupling is that the driving shaft drives the conductor disk to rotate. The conductor cuts the permanent magnet, generating a magnetic field that produces eddy currents. The magnetic field generated by the eddy currents interacts with the magnetic field of the permanent magnet, forming a non-contact torque transmission, thereby driving the load shaft to rotate.

[0003] However, the air gap between the conductor disk and the permanent magnet requires high processing precision to avoid direct contact between the two, which could cause the permanent magnet to break. This results in high production costs and prevents large-scale application on low-speed equipment. Utility Model Content

[0004] This invention aims to at least solve the technical problem of "conductor disk and permanent magnet contact breakage" existing in the prior art. To this end, this invention proposes a magnetic coupling that incorporates a self-lubricating and wear-resistant composite layer between the permanent magnet and the conductor disk to prevent high-temperature wear and breakage caused by direct contact, thus meeting the needs of low-speed equipment using magnetic couplings.

[0005] The magnetic coupling according to some embodiments of the present invention includes:

[0006] The shell is hollow and cylindrical.

[0007] A conductor disk is fixedly disposed on the inner periphery of the housing, and the conductor disk rotates synchronously with the housing;

[0008] A rotor structure is disposed in the middle of the interior of the housing, and a gap is provided between the outer periphery of the rotor structure and the inner periphery of the conductor disk;

[0009] A drive shaft, which is connected to one end of the housing;

[0010] A driven shaft passes through the other end of the housing and is connected to the rotor structure; the driven shaft and the housing are rotatably connected by a bearing.

[0011] It also includes a composite lubricating layer, which is disposed on the inner wall of the conductor disk or the outer periphery of the rotor structure.

[0012] According to some embodiments of the present invention, the composite lubricating layer is any one of a nickel-graphene composite layer, a ceramic resin layer, or a graphene layer.

[0013] According to some embodiments of the present invention, the housing includes a barrel body, a drive end cover, and a load end cover. One side of the drive end cover is connected to the end face of the barrel body, and the other side is connected to the drive shaft. The load end cover has a bearing through its center, the outer ring of the bearing abuts against the inner ring of the load end cover, and the inner ring of the bearing is connected to the driven shaft.

[0014] According to some embodiments of the present invention, the conductor disk is disposed in the barrel body, one end of the conductor disk is connected to the drive end cover, and the other end is connected to the load end cover. The outer wall of the conductor disk is spaced apart from the inner wall of the barrel body, and the inner wall of the conductor disk is spaced apart from the outer periphery of the rotor structure.

[0015] According to some embodiments of the present invention, the rotor structure includes a rotating frame and a permanent magnet structure fixed to the periphery of the rotating frame, and the rotating frame is connected to the driven shaft.

[0016] According to some embodiments of this utility model, the permanent magnet structure is arranged in three or four sets at equal intervals around the rotating frame.

[0017] According to some embodiments of the present invention, the permanent magnet structure includes a permanent magnet block and a mounting base, the mounting base is connected to the rotating frame, and the permanent magnet block is fixed to the side of the mounting base near the conductor disk.

[0018] According to some embodiments of the present invention, the end face of the mounting base near the conductor disk is higher than the end face of the permanent magnet block near the conductor disk, and the composite lubricating layer is embedded in the mounting base and covers the permanent magnet block.

[0019] According to some embodiments of the present invention, the thickness of the composite lubricating layer is 1.0 mm to 1.5 mm, and the composite lubricating layer is in direct contact with the conductor disk.

[0020] According to some embodiments of the present invention, the composite lubricating layer is disposed on the inner wall of the conductor disk, and the side of the composite lubricating layer near the rotor structure is spaced apart from the outer periphery of the rotor structure.

[0021] The magnetic coupling according to some embodiments of the present invention has at least the following beneficial effects: the lubrication function is achieved by utilizing the low dry friction coefficient of the composite lubrication layer. When the magnetic coupling is loosened due to misfitting tolerances, aging from long-term use, or vibration of the housing, causing direct contact between the conductor disk and the rotor structure, the composite lubrication layer can replace the conductor disk or the rotor structure to directly contact one of them. The composite lubrication layer has the characteristic of low dry friction coefficient, which can ensure that the two can still maintain relative motion and achieve normal operation even when they are in contact at low speeds.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a three-dimensional schematic diagram of the magnetic coupling according to an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the magnetic coupling according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the magnetic coupling according to an embodiment of the present invention.

[0027] Figure label:

[0028] Shell 100, barrel 110, drive end cover 120, load end cover 130

[0029] Bearing 210

[0030] Conductor disk 300,

[0031] Rotor structure 400, rotating frame 410, permanent magnet structure 420, permanent magnet block 421, mounting base 422, drive shaft 510, driven shaft 520, composite lubrication layer 530. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, top, bottom, etc., are based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] The following is for reference. Figures 1-3 A magnetic coupling according to an embodiment of the present invention is described.

[0037] like Figures 1-3 As shown, the magnetic coupling includes a hollow, cylindrical housing 100, which serves as the frame of the coupling and is made of metal to ensure the safety of the internal working components. Inside the housing 100 are a conductor disk 300 and a rotor structure 400. The conductor disk 300 is fixedly disposed on the inner periphery of the housing 100 and rotates synchronously with the housing 100, thus functioning as the main drive end. The rotor structure 400 is located in the center of the housing 100, with a gap between its outer periphery and the inner periphery of the conductor disk 300. The two are coupled and driven through the eddy current effect.

[0038] One end of the drive shaft 510 is connected to the housing 100, and the other end of the drive shaft 510 is connected to the drive mechanism. The drive mechanism can be a motor, engine, or other mechanism with output torque. The drive shaft 510 can be connected to different types of drive mechanisms, which will not be described in detail here. The drive mechanism drives the housing 100 and the internal conductor disk 300 to rotate, thereby cutting the magnetic field lines.

[0039] Driven shaft 520 passes through the other end of housing 100 relative to drive shaft 510 and is connected to rotor structure 400. Driven shaft 520 and housing 100 are rotatably linked by bearing 210. Bearing 210 is a technical solution well known to those skilled in the art and will not be described in detail here.

[0040] This system also includes a composite lubrication layer 530, which is disposed on the inner wall of the conductor disk 300 or the outer periphery of the rotor structure 400. The composite lubrication layer 530 utilizes its low coefficient of dry friction to achieve lubrication. When the magnetic coupling experiences direct contact between the conductor disk 300 and the rotor structure 400 due to misalignment tolerances, aging from prolonged use, or vibration of the housing 100 causing internal components to loosen, the composite lubrication layer 530 can replace either the conductor disk 300 or the rotor structure 400 in direct contact with either of them. The low coefficient of dry friction ensures that the two components maintain relative motion even at low speeds, allowing for normal operation. This reduces heat generation and magnet breakage caused by dry friction between the conductor disk 300 and the rotor structure 400. The composite lubrication layer 530 also exhibits high-temperature resistance, ensuring the magnetic coupling operates normally without being affected by temperature in low-speed equipment. This reduces manufacturing costs and production precision requirements, enabling the widespread adoption of magnetic couplings in low-speed equipment.

[0041] In some embodiments of this invention, the composite lubricating layer 530 is any one of a nickel-graphene composite layer, a ceramic resin layer, or a graphene layer. In this embodiment, a nickel-graphene composite layer is preferentially used as the composite lubricating layer 530 of the magnetic coupling in this embodiment.

[0042] It should be understood that the use of a nickel-graphene composite layer, a ceramic resin layer, or a graphene layer for the composite lubricating layer 530 is not the only implementation method. This utility model does not elaborate on the material selection for the composite lubricating layer 530. It should be understood that, without departing from the basic concept of this utility model, flexible changes in the material selection for the composite lubricating layer 530 should all be considered within the protection scope defined by this utility model.

[0043] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the housing 100 includes a barrel 110, a drive end cover 120 and a load end cover 130. One side of the drive end cover 120 is connected to the end face of the barrel 110, and the other side is connected to the drive shaft 510. A bearing 210 is provided through the middle of the load end cover 130. The outer ring of the bearing 210 abuts against the inner ring of the load end cover 130, and the inner ring of the bearing 210 is connected to the driven shaft 520.

[0044] Specifically, the barrel body 110, drive end cover 120, and load end cover 130 are coaxially arranged along the axial direction. The drive end cover 120 and load end cover 130 cover the openings at both ends of the barrel body 110, encapsulating the conductor disk 300 and the rotor structure 400 inside the barrel body 110. The drive end cover 120 is fixedly connected to the drive shaft 510, while one end of the driven shaft 520 is connected to the rotor structure 400, and the other end extends from inside the barrel body 110 toward the bearing 210 and extends out of the housing 100. The outer ring and inner ring of the bearing 210 are rotatably connected, and the inner ring can assist the driven shaft 520 to rotate smoothly.

[0045] In some embodiments of this utility model, such as Figures 1-3 As shown, the conductor disk 300 is disposed inside the barrel 110. One end of the conductor disk 300 is connected to the drive end cover 120, and the other end is connected to the load end cover 130. The outer wall of the conductor disk 300 is spaced apart from the inner wall of the barrel 110, and the inner wall of the conductor disk 300 is spaced apart from the outer periphery of the rotor structure 400.

[0046] Specifically, the outer wall of the conductor disk 300 is spaced apart from the inner wall of the barrel 110, and the inner wall of the conductor disk 300 is spaced apart from the outer periphery of the rotor structure 400. This ensures that the conductor disk 300 remains relatively stationary during operation, preventing contact and wear between the conductor disk 300 and the internal components of the barrel 110.

[0047] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the rotor structure 400 includes a rotating frame 410 and a permanent magnet structure 420 fixed to the periphery of the rotating frame 410. The rotating frame 410 is connected to the driven shaft 520. Furthermore, three or four sets of permanent magnet structures 420 are equally spaced around the rotating frame 410.

[0048] Specifically, the number of permanent magnet structures 420 on the rotating frame 410 is adjusted according to the specifications of the magnetic coupling. In this embodiment, the rotating frame 410 uses four sets of permanent magnet structures 420 to drive the driven shaft 520.

[0049] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the permanent magnet structure 420 includes a permanent magnet block 421 and a mounting base 422. The mounting base 422 is connected to the rotating frame 410, and the permanent magnet block 421 is fixed to the side of the mounting base 422 near the conductor disk 300. Further, the end face of the mounting base 422 near the conductor disk 300 is higher than the end face of the permanent magnet block 421 near the conductor disk 300. The composite lubricating layer 530 is embedded in the mounting base 422, covering the permanent magnet block 421.

[0050] Specifically, the mounting base 422 is recessed radially towards the center on the side near the inner wall of the conductor disk 300, forming a mounting cavity that can accommodate the permanent magnet block 421. The permanent magnet block 421 is embedded in the mounting base 422 and the top end face of the permanent magnet block 421 is lower than the end face of the mounting base 422, thereby preventing the permanent magnet block 421 from contacting the conductor disk 300.

[0051] Furthermore, the composite lubrication layer 530 has a thickness of 1.0mm to 1.5mm, and it is in direct contact with the conductor disk 300. Specifically, the composite lubrication layer 530 covers the mounting base 422, and the conductor disk 300 and the mounting base 422 are in direct contact through the composite lubrication layer 530. The composite lubrication layer 530 prevents the conductor disk 300 from directly contacting the rotor structure 400 due to aging, collision, or other reasons, thus avoiding wear and damage. The composite lubrication layer 530 can also be spaced apart from the conductor disk 300 until the conductor disk 300 in the magnetic coupling comes into contact with the rotor structure 400, at which point it provides protection.

[0052] In some embodiments of this invention, the composite lubricating layer 530 may also be disposed on the inner wall of the conductor disk 300, with the side of the composite lubricating layer 530 near the rotor structure 400 having a gap with the outer periphery of the rotor structure 400. Specifically, the location of the composite lubricating layer 530 can be arbitrarily selected at either the conductor disk 300 or the rotor structure 400.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic coupling, characterized in that, include: The housing (100) is hollow and barrel-shaped; A conductor disk (300) is fixedly disposed on the inner periphery of the housing (100), and the conductor disk (300) rotates synchronously with the housing (100); A rotor structure (400) is disposed in the middle of the interior of the housing (100), and the outer periphery of the rotor structure (400) is spaced from the inner periphery of the conductor disk (300). A drive shaft (510) is connected to one end of the housing (100); Driven shaft (520) passes through the other end of the housing (100) and is connected to the rotor structure (400). The driven shaft (520) and the housing (100) are rotatably connected by a bearing (210). It also includes a composite lubricating layer (530), which is disposed on the inner wall of the conductor disk (300) or the outer periphery of the rotor structure (400).

2. The magnetic coupling according to claim 1, characterized in that, The composite lubricating layer (530) is any one of a nickel-graphene composite layer, a ceramic resin layer, or a graphene layer.

3. The magnetic coupling according to claim 2, characterized in that, The housing (100) includes a barrel (110), a drive end cover (120), and a load end cover (130). One side of the drive end cover (120) is connected to the end face of the barrel (110), and the other side is connected to the drive shaft (510). The load end cover (130) has a bearing (210) through its middle section. The outer ring of the bearing (210) abuts against the inner ring of the load end cover (130), and the inner ring of the bearing (210) is connected to the driven shaft (520).

4. The magnetic coupling according to claim 3, characterized in that, The conductor disk (300) is disposed inside the barrel (110). One end of the conductor disk (300) is connected to the drive end cover (120), and the other end is connected to the load end cover (130). The outer wall of the conductor disk (300) is spaced apart from the inner wall of the barrel (110), and the inner wall of the conductor disk (300) is spaced apart from the outer periphery of the rotor structure (400).

5. The magnetic coupling according to claim 2, characterized in that, The rotor structure (400) includes a rotating frame (410) and a permanent magnet structure (420) fixed to the periphery of the rotating frame (410), and the rotating frame (410) is connected to the driven shaft (520).

6. The magnetic coupling according to claim 5, characterized in that, The permanent magnet structure (420) is arranged in three or four sets at equal intervals around the rotating frame (410).

7. The magnetic coupling according to claim 6, characterized in that, The permanent magnet structure (420) includes a permanent magnet block (421) and a mounting base (422). The mounting base (422) is connected to the rotating frame (410), and the permanent magnet block (421) is fixed to the side of the mounting base (422) near the conductor disk (300).

8. The magnetic coupling according to claim 7, characterized in that, The end face of the mounting base (422) near the conductor disk (300) is higher than the end face of the permanent magnet block (421) near the conductor disk (300). The composite lubricating layer (530) is embedded in the mounting base (422) and covers the permanent magnet block (421).

9. The magnetic coupling according to claim 8, characterized in that, The composite lubricating layer (530) has a thickness of 1.0 mm to 1.5 mm and is in direct contact with the conductor disk (300).

10. The magnetic coupling according to claim 1, characterized in that, The composite lubricating layer (530) is disposed on the inner wall of the conductor disk (300), and the side of the composite lubricating layer (530) near the rotor structure (400) is spaced apart from the outer periphery of the rotor structure (400).

Images