A magnetic levitation structure

Abstract

The present invention relates to a magnetic levitation structure, which includes a fixed cylinder and a mounting component. The fixed cylinder is provided with a mounting cavity penetrating along a first direction; the mounting component includes a mounting piece, a movable permanent magnet and a fixed permanent magnet. The mounting piece extends along the first direction and is movably arranged in the mounting cavity along the first direction. The movable permanent magnet and the fixed permanent magnet are both arranged in the mounting cavity. The movable permanent magnet is arranged in a ring shape and sleeved around the periphery of the mounting piece. The fixed permanent magnet is annularly distributed around the periphery of the movable permanent magnet and magnetically cooperates with the movable permanent magnet to form a magnetic levitation structure. The present invention aims to solve the problem that the existing shock absorber has poor vibration isolation performance for high-frequency parts.

Description

Technical Field

[0001] The present invention relates to the field of precision vibration damping, and particularly to a magnetic levitation structure. Background Art

[0002] Common vibration isolation structures are generally air vibration isolation structures or steel spring vibration isolation structures, both of which have structural solid connections, affecting the vibration isolation performance of the high-frequency part. Summary of the Invention

[0003] Based on the above description, the present invention provides a magnetic levitation structure to solve the problem of poor vibration isolation performance of the existing shock absorber for the high-frequency part.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A magnetic levitation structure, comprising:

[0006] A fixed cylinder, including an installation cavity penetrating along a first direction; and,

[0007] An installation component, including an installation piece, a movable permanent magnet, and a fixed permanent magnet. The installation piece extends along the first direction and is movably arranged in the installation cavity along the first direction. The movable permanent magnet and the fixed permanent magnet are both arranged in the installation cavity. The movable permanent magnet is arranged in a ring shape and sleeved around the installation piece. The fixed permanent magnet is annularly distributed around the movable permanent magnet and magnetically cooperates with the movable permanent magnet to form a magnetic levitation structure.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows:

[0009] Further, the magnetic levitation structure further includes a movable seat and a fixed seat. The movable seat is floatingly installed at one end of the fixed cylinder along the first direction, and the fixed seat is installed at the other end of the fixed cylinder;

[0010] Both ends of the installation piece are connected to the movable seat and the fixed seat respectively.

[0011] Further, the magnetic levitation structure further includes at least two elastic limit members. The two elastic limit members both extend along a second direction and are spaced apart along the first direction. The second direction is perpendicular to the first direction. One of the two elastic limit members is installed on the fixed seat, and the other is installed in the installation cavity and is arranged close to the movable seat;

[0012] The installation piece is connected to the two elastic limit members to be movably arranged in the installation cavity along the first direction.

[0013] Further, annular bosses are formed at positions of the installation cavity close to the movable seat and at the fixed seat;

[0014] Each of the elastic limiting members is arranged as an annular leaf spring, and the circumferential side of each annular leaf spring is fixed to the corresponding annular boss;

[0015] The installation member is fixed in the inner rings of the two annular leaf springs.

[0016] Further, an installation hole is recessed in the end face of the installation member facing the movable seat, and the installation hole extends along a first direction;

[0017] The installation assembly further includes a damping rod, the damping rod is arranged in the installation hole, and one end of the damping rod is connected to the movable seat.

[0018] Further, the damping rod is flexibly arranged.

[0019] Further, the movable permanent magnet includes two permanent magnet parts arranged in a ring shape. Both of the two permanent magnet parts are sleeved on the periphery of the installation member, are spaced along the first direction, and the distance between the two permanent magnet parts can be adjusted.

[0020] Further, the installation member includes an installation rod, an installation sleeve and a locking member. The installation rod extends along the first direction. The installation sleeve is sleeved on the periphery of the installation rod and is in clearance fit with the installation rod. The locking member is used to lock the installation sleeve to the installation rod;

[0021] One of the two permanent magnet parts is installed on the periphery of the installation sleeve, and the other is installed on the periphery of the installation rod.

[0022] Further, an annular groove is recessed in one end face of the installation sleeve. A plurality of convex blocks are arranged on one groove side wall of the annular groove, and the plurality of convex blocks are spaced along the circumferential direction of the annular groove;

[0023] The locking member is arranged as an annular clamping block. The annular clamping block is arranged in the annular groove and is provided with a plurality of matching blocks corresponding to the plurality of convex blocks one by one. The annular clamping block has a locking state in which each of the matching blocks abuts against the corresponding convex block, and an unlocking state in which each of the matching blocks is located in the gap between two adjacent convex blocks.

[0024] Further, the plurality of convex blocks are arranged on the inner groove side wall of the annular groove;

[0025] A plurality of first threaded through holes extending along a second direction are arranged on the outer groove side wall of the annular groove, and the plurality of first threaded through holes are spaced along the circumferential direction of the annular groove.

[0026] Further, the fixed cylinder includes:

[0027] A cylinder body, on the circumferential side of which there is an installation opening corresponding to the installation sleeve and used to expose the annular groove to the external environment; and,

[0028] A fixing plate, installed on the periphery of the cylinder body and covering the installation opening.

[0029] Further, a limiting cavity is formed between the end face of the fixed seat and the fixed permanent magnet;

[0030] The installation component further includes a limiting ring sleeved on the periphery of the installation rod, located in the limiting cavity, and protruding from the fixed permanent magnet along the second direction.

[0031] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0032] The installation part is movably installed in the installation cavity along the first direction. When the magnetic levitation structure is vibrated, the installation part moves along the first direction, so that the movable permanent magnet also moves along the first direction. At this time, due to the magnetic field influence between the movable permanent magnet and the fixed permanent magnet, the movable permanent magnet is reset, realizing efficient vibration isolation and stable compensation of gravity. Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of a magnetic levitation structure provided by an embodiment of the present invention;

[0034] Figure 2 For Figure 1 The three-dimensional exploded sectional view;

[0035] Figure 3 It is a sectional view of a magnetic levitation structure provided by an embodiment of the present invention;

[0036] Figure 4 It is a schematic structural diagram of the installation component in an embodiment of the present invention;

[0037] Figure 5 It is a schematic structural diagram of the installation component from another perspective in an embodiment of the present invention (including part of the fixed permanent magnet);

[0038] Figure 6 It is a top view of the installation component in an embodiment of the present invention;

[0039] Figure 7 It is a schematic structural diagram of the installation part in an embodiment of the present invention;

[0040] Figure 8This is a cross-sectional schematic view of the mounting member in the embodiment of the present invention.

[0041] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0042] 1. Fixed cylinder; 11. Cylinder body; 111. Installation cavity; 112. Installation opening; 12. Fixed plate; 2. Installation assembly; 21. Mounting member; 211. Mounting rod; 2111. Mounting hole; 21111. Third hole part; 21112. Fourth hole part; 212. Mounting sleeve; 2121. Annular groove; 2122. Protrusion; 2123. First threaded through hole; 213. Locking member; 2131. Annular clamping block; 2132. Fitting block; 214. Limit nut; 22. Movable permanent magnet; 221. Permanent magnet part; 23. Fixed permanent magnet; 24. Elastic limiting member; 241. Annular leaf spring; 25. Vibration damping rod; 251. Rod body; 252. Connection part; 2521. Threaded hole; 253. Pressing ring; 26. Limit ring; 3. Movable seat; 31. First hole part; 32. Second hole part; 4. Fixed seat; 41. Limiting cavity; 5. Annular boss; 6. Installation ring. Detailed implementation manners

[0043] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant attached drawings. Embodiments of the present application are shown in the attached drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0045] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the attached drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description language used herein is accordingly interpreted.

[0046] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is a transmission of electrical signals or data between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0047] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / include" or "has" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0048] Please refer to Figure 1 and Figure 3 , the present invention provides a magnetic levitation structure, comprising a fixed cylinder 1 and a mounting assembly 2. The fixed cylinder 1 includes a mounting cavity 111 penetrating along a first direction. The mounting assembly 2 includes a mounting member 21, a movable permanent magnet 22 and a fixed permanent magnet 23. The mounting member 21 extends along the first direction and is movably arranged in the mounting cavity 111 along the first direction. Both the movable permanent magnet 22 and the fixed permanent magnet 23 are arranged in the mounting cavity. And the movable permanent magnet 22 is arranged in a ring shape and sleeved around the periphery of the mounting member 21. The fixed permanent magnet 23 is annularly distributed around the periphery of the movable permanent magnet 22 and connected to the fixed cylinder. By reasonably designing the pole directions of the movable permanent magnet 22 and the fixed permanent magnet 23, a magnetic levitation support effect can be formed, which belongs to the prior art and is not limited herein.

[0049] In this embodiment, the mounting member 21 is movably mounted in the mounting cavity 111 along the first direction. When the magnetic levitation structure is vibrated, the mounting member 21 moves along the first direction, so that the movable permanent magnet 22 also moves along the first direction. At this time, due to the magnetic field influence between the movable permanent magnet 22 and the fixed permanent magnet 23, the movable permanent magnet 22 is reset, realizing efficient vibration isolation and stable compensation of gravity.

[0050] To better transmit vibration, the magnetic levitation structure further includes a movable seat 3 and a fixed seat 4. The movable seat 3 is floatingly mounted at one end of the fixed cylinder 1 along the first direction, and the fixed seat 4 is mounted at the other end of the fixed cylinder 1. Both ends of the mounting member 21 are respectively connected to the movable seat 3 and the fixed seat 4. In one embodiment, the movable seat 3 is used to connect a load, and the fixed seat 4 is used to be fixedly connected to the ground, so as to isolate the load. At this time, the second direction is horizontal and the first direction is vertical.

[0051] In order to movably mount the mounting member 21 into the mounting cavity 111 in the first direction. Further, the magnetic levitation structure further includes at least two elastic limiting members 24. Both of the two elastic limiting members 24 extend in the second direction and are spaced apart in the first direction. The second direction is perpendicular to the first direction. One of the two elastic limiting members 24 is mounted on the fixed seat 4, and the other is mounted in the mounting cavity 111 and is disposed close to the movable seat 3; the mounting member 21 is connected to the two elastic limiting members 24 so as to be movably disposed in the mounting cavity in the first direction.

[0052] In this embodiment, the two elastic limiting members 24 are respectively fixed to the fixed seat 4 and the fixed cylinder 1. And the mounting member 21 is connected to the two elastic limiting members 24. The stiffness of each elastic limiting member 24 in the second direction is much greater than that in the first direction, thereby restricting the displacement of the mounting member 21 in the second direction, so that the mounting member 21 can only move in the first direction approximately. And during the movement of the mounting member 21 in the first direction, the two elastic limiting members will also reset after deformation, and cooperate with the movable permanent magnet 22 and the fixed permanent magnet 23 to achieve vibration reduction in the first direction.

[0053] Specifically, in this embodiment, referring to Figure 3 , annular bosses 5 are formed at positions of the mounting cavity 111 close to the movable seat 3 and the fixed seat 4. Each elastic limiting member 24 is provided as an annular leaf spring 241. The circumferential sides of the annular leaf springs 241 are fixed to the corresponding annular bosses 5. The mounting member 21 is fixed in the inner holes of the two annular leaf springs 241. The stiffness of the two annular leaf springs 241 in the second direction is much greater than that in the first direction, so that the two annular leaf springs 241 can restrict the movement of the mounting rod 211 in the second direction and ensure that the mounting rod 211 can move and reduce vibration in the first direction. In this way, the structure is stable.

[0054] Specifically, continue to refer to Figures 3 to 6 , a plurality of second threaded through holes extending in the first direction are provided on each annular boss 5. The plurality of second threaded through holes are circumferentially spaced apart on each annular boss 5; each annular leaf spring 241 is provided with a plurality of connection holes penetrating in the first direction. The plurality of connection holes correspond to the plurality of second threaded through holes one by one, and each connection hole is connected to the corresponding second threaded through hole by a bolt, so that each annular leaf spring 241 is fixed to the corresponding annular boss 5.

[0055] In this embodiment, each of the mounting members 21 includes a mounting rod 211 and at least three limiting nuts 214. The mounting rod 211 passes through the inner holes of the annular leaf springs 241. A stepped surface facing the fixed seat 4 is formed at the end of the mounting rod 211 close to the fixed seat 4. Two of the limiting nuts 214 are screwed onto the end of the mounting rod 211 close to the movable seat 3 and jointly clamp the corresponding annular leaf spring 241. Another limiting nut 214 is screwed onto the end of the mounting rod 211 close to the fixed seat 4 and jointly clamps the corresponding annular leaf spring 241 with the stepped surface, thereby connecting the mounting rod 211 to the two annular leaf springs 241.

[0056] In this embodiment, referring to Figure 3 , both ends of the mounting rod 211 pass through the inner rings of the two annular leaf springs 241 respectively. Each bolt passes through each connection hole and is connected to the corresponding second threaded through hole, thereby fixing the circumferences of the annular leaf springs 241 to the corresponding annular bosses 5. Among them, two of the limiting nuts 214 are screwed onto the end of the mounting rod 211 close to the movable seat 3. The two limiting nuts 214 are respectively located on both sides of the corresponding annular leaf spring 241 distributed in the first direction, and both of the limiting nuts 214 are tightened towards the annular leaf spring 241 to clamp and fix the annular leaf spring 241, thereby fixing the corresponding annular leaf spring 241 to the end of the mounting rod 211 close to the movable seat 3. Another limiting nut 214 is screwed onto the end of the mounting rod 211 close to the fixed seat 4. The stepped surface and the limiting nut 214 are respectively located on both sides of the corresponding annular leaf spring 241 distributed in the first direction. Tighten the limiting nut 214 towards the stepped surface, thereby fixing the corresponding annular leaf spring 241 to the end of the mounting rod 211 close to the fixed seat 4. In this way, disassembly and assembly are convenient, and maintenance and adjustment are easy.

[0057] In another embodiment, the axis of the mounting rod 211 is perpendicular to the end surface of the annular boss 5 facing the mounting rod 211. The elastic limiting member 24 can also be provided as a plurality of strip-shaped leaf springs. One ends of the plurality of strip-shaped leaf springs are fixedly connected to the end of the mounting rod 211, and the other ends of the plurality of strip-shaped leaf springs are connected to the annular boss 5 and are spaced apart along the circumference of the annular boss 5. Thereby, it can limit the movement of the mounting rod 211 in the second direction, that is, along the radial direction of the mounting rod 211.

[0058] It should be noted that there is no limitation on the extension directions of the plurality of strip leaf springs. As long as one ends of the plurality of strip leaf springs are fixedly connected to the same position of the mounting rod 211, and the other ends of the plurality of strip leaf springs are connected to the annular boss 5 at intervals, the extension directions of the strip leaf springs can be perpendicular to the first direction, or can be inclined towards the movable seat 3 or the fixed seat 4.

[0059] In order to improve the vibration damping performance, in this embodiment, referring to Figure 3 and Figure 8 , an installation hole 2111 is recessed in the end face of the installation member 21 facing the movable seat 3, and the installation hole 2111 extends along the first direction; the installation assembly further includes a vibration damping rod 25, the vibration damping rod 25 is disposed in the installation hole 2111, and one end of the vibration damping rod 25 is connected to the movable seat 3. The load borne by the movable seat 3 is transmitted to the installation member 21 through the vibration damping rod 25, and the vibration damping rod 25 drives the installation member 21 to move along the first direction, so that the vibration damping rod 25 and the two elastic limit members 24 are connected in series to achieve vibration damping in the second direction. In this way, the movable permanent magnet 22, the fixed permanent magnet 23, the vibration damping rod 25 and the two elastic limit members 24 cooperate together to achieve efficient vibration isolation in all directions.

[0060] It should be noted that there is no limitation on the state of the vibration damping rod 25 installed in the installation hole 2111. The vibration damping rod 25 can be clamped in the installation hole 2111, or the vibration damping rod 25 can be fixedly connected in the installation hole 2111.

[0061] Specifically, in order to connect the vibration damping rod 25 to the movable seat 3, in this embodiment, referring to Figure 3 and Figure 8 , the vibration damping rod 25 includes a rod body 251 and a connecting portion 252. The rod body 251 passes through the installation hole 2111, and the connecting portion 252 is installed at the end of the rod body 251 close to the movable seat 3, and a threaded hole is recessed in the end face of the connecting portion 252; the movable seat 3 is provided with a first hole portion 31 and a second hole portion 32 that penetrate and are connected along the first direction, the first hole portion 31 is adapted to the threaded hole, and the second hole portion 32 is adapted to the connecting portion 252. The vibration damping rod 25 is connected to the movable seat 3 by a bolt passing through the first hole portion 31 and connecting to the threaded hole. In addition, at least part of the connecting portion 252 connecting the rod body 251 is reduced in size in the direction close to the rod body 251, so as to strengthen the structure of the vibration damping rod 25.

[0062] In this embodiment, continue to refer to Figure 3 and Figure 7, the shock-absorbing rod 25 further includes a pressing ring 253, the pressing ring 253 is connected to the periphery of the rod body 251 and is disposed close to the fixed seat 4; the mounting hole 2111 includes a third hole portion 21111 and a fourth hole portion 21112, the diameter of the third hole portion 21111 is larger than that of the fourth hole portion 21112 and is adapted to the pressing ring 253. And the aperture of the third hole portion 21111 is larger than the diameter of the rod body 251, so that the force transmitted to the rod body 251 via the connecting portion 252 directly passes through the pressing ring 253 and is transmitted to the end of the mounting rod 211 close to the fixed seat 4, and then is transmitted to the annular leaf spring 241 connected to the fixed seat 4. Together with the annular leaf spring 241, it achieves the function of shock absorption in the second direction, avoiding the radial movement of the mounting rod 211 and having strong stability.

[0063] Further, in this embodiment, the shock-absorbing rod 25 is flexibly arranged and can cooperate with the elastic limiting member 24 to achieve horizontal shock absorption.

[0064] It should be noted that in the present invention, the specific orientations of the first direction and the second direction are not limited, as long as the first direction and the second direction are perpendicularly arranged. In this embodiment, the first direction is the vertical direction and the second direction is the horizontal direction. And the fixed cylinder 1 is arranged in a cylindrical shape, the first direction is the axial direction of the fixed cylinder 1, and the second direction is the radial direction of the fixed cylinder 1.

[0065] In this embodiment, referring to Figures 3 to 6 , the movable permanent magnet 22 includes two permanent magnet portions 221 arranged in a ring shape. Both of the two permanent magnet portions 221 are sleeved on the periphery of the mounting member 21 and are spaced apart along the first direction, and the distance between the two permanent magnet portions 221 can be adjusted. Thus, the force between the two permanent magnet portions 221 and the fixed permanent magnet 23 can be adjusted by adjusting the distance between the two permanent magnet portions 221, so as to adjust the load-bearing capacity of the magnetic levitation structure.

[0066] It should be noted that the fixed permanent magnet 23 is composed of a plurality of magnets each arranged in an arc segment and spaced apart in a circular shape. In this embodiment, the magnetic levitation structure further includes a mounting ring 6, the fixed permanent magnet 23 is mounted on the mounting ring 6, and the mounting ring 6 is threadedly connected to the cavity wall of the mounting cavity 111. Thus, the position of the fixed permanent magnet 23 can also be adjusted along the first direction to further adjust the load-bearing capacity of the magnetic levitation structure.

[0067] More specifically, in this embodiment, referring to Figure 3, the mounting member 21 includes a mounting rod 211, a mounting sleeve 212 and a locking member 213. The mounting rod 211 extends in a first direction. The mounting sleeve 212 is sleeved around the mounting rod 211 and is in clearance fit with the mounting rod 211. The locking member 213 is used to lock the mounting sleeve 212 to the mounting rod 211. One of the two permanent magnet portions 221 is mounted on the outer periphery of the mounting sleeve 212, and the other is mounted on the outer periphery of the mounting rod 211. Release the locking of the mounting sleeve 212 by the locking member 213 to adjust the mounting sleeve 212 in the first direction. After the adjustment is completed, the locking member 213 locks the mounting sleeve 212 to the mounting rod 211 again. Thus, the distance between the two permanent magnet portions 221 can be adjusted. In this way, the structure is simple and easy to set up.

[0068] In another embodiment, at least part of the outer periphery of the mounting rod 211 is provided with threads. The mounting sleeve 212 is screwed onto the outer periphery of the mounting rod 211, and the length of at least the part of the mounting rod 211 provided with threads along the first direction is greater than the length of the mounting sleeve 212. Thus, the mounting sleeve 212 can be rotated to adjust the position where the mounting sleeve 212 is connected to the mounting rod 211, so as to adjust the distance between the two permanent magnet portions 221.

[0069] In the present invention, the structure of the locking member is not limited. In this embodiment, referring to Figures 3 to 8 , an annular groove 2121 is concavely provided on one end face of the mounting sleeve 212. A plurality of protrusions 2122 are provided on one groove side wall of the annular groove 2121. The plurality of protrusions 2122 are spaced apart along the circumferential direction of the annular groove 2121. The locking member 213 is provided as an annular clamping block 2131. The annular clamping block 2131 is disposed in the annular groove 2121 and is provided with a plurality of fitting blocks 2132 corresponding to the plurality of protrusions 2122 one by one. The annular clamping block 2131 has a locking state in which each of the fitting blocks 2132 abuts against the protrusion 2122, and an unlocking state in which each of the fitting blocks 2132 is located in the gap between two adjacent protrusions 2122.

[0070] Install the annular clamping block 2131 in the annular groove 2121 and rotate the annular clamping block 2131 so that each of the fitting blocks 2132 abuts against each of the protrusions 2122. This is equivalent to the annular clamping block 2131 being clamped tightly in the annular groove 2121, and the part of the mounting sleeve 212 located inside the annular groove 2121 abuts tightly against the mounting rod 211, thereby firmly fixing the mounting sleeve 212 to the mounting rod 211 and preventing the mounting sleeve 212 from loosening during a long-term vibration reduction process. In this way, the vibration reduction stability is good and the vibration reduction accuracy is improved.

[0071] In addition, when it is necessary to adjust the position of the mounting sleeve 212, the annular clamping block 2131 is converted from the locked state to the unlocked state, and the annular clamping block 2131 is rotated in the reverse direction so that each of the mating blocks 2132 is located between the gaps of two adjacent bumps 2122, releasing the pressing on the inner part of the mounting sleeve 212 located in the annular groove 2121. In this way, the connection is ingenious and the operation is simple.

[0072] In another embodiment, the locking member may be two snap rings clamped on the mounting rod 211, and the two snap rings are respectively abutted against the two ends of the mounting sleeve 212.

[0073] Further, in this embodiment, continue to refer to Figures 3 to 6 , a plurality of the bumps 2122 are provided on the inner groove side wall of the annular groove 2121; a plurality of first threaded through holes 2123 extending in the second direction are provided on the outer groove side wall of the annular groove 2121, and the plurality of first threaded through holes 2123 are circumferentially spaced apart along the annular groove 2121. By screwing a plurality of bolts into the plurality of first threaded through holes 2123 one by one and abutting against the periphery of the annular clamping block 2131, the annular clamping block 2131 is abutted against the inner groove side wall of the annular groove 2121, and the fixation is more firm, further improving the stability.

[0074] In this embodiment, refer to Figures 1 to 4 and Figure 8 , the fixed cylinder 1 includes a cylinder body 11 and a fixing plate 12. An installation opening 112 is provided on the peripheral side of the cylinder body 11. The installation opening 112 corresponds to the mounting sleeve 212 and is used to expose the annular groove 2121 to the external environment; the fixing plate 12 is installed on the periphery of the cylinder body 11 and covers the installation opening 112. The fixing plate 12 is detachably installed on the cylinder body 11 through bolts, so that by removing the fixing plate 12, the bolts and the annular clamping block 2131 connected to the first threaded through holes 2123 can be removed through the installation opening 112 to adjust the position of the mounting sleeve 212. When it is necessary to adjust the position of the mounting sleeve 212, it is not necessary to disassemble the entire cylinder body 11. In this way, the adjustment operation is simplified.

[0075] In this embodiment, refer to Figure 3, a limiting cavity 41 is formed between the end face of the fixed seat 4 and the fixed permanent magnet 23; the mounting assembly 2 further includes a limiting ring 26, the limiting ring 26 is sleeved on the periphery of the mounting rod 211, and is located in the limiting cavity 41, and the limiting ring 26 protrudes from the fixed permanent magnet 23 along the second direction. The limiting ring 26 moves along the first direction with the mounting rod 211, and is in a suspended state in the normal working state, without contacting any other structural parts, belonging to mechanical limit protection. In abnormal situations, it can limit the stroke of the mounting rod 211 moving along the first direction, playing a mechanical protection effect and improving the safety performance.

[0076] The foregoing are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic suspension structure, characterized in that: include: A fixing cylinder, comprising a mounting cavity extending through along a first direction; and The mounting assembly comprises a mounting member, a movable permanent magnet and a fixed permanent magnet, wherein the mounting member extends along a first direction and is movably arranged in the mounting cavity along the first direction, the movable permanent magnet and the fixed permanent magnet are both arranged in the mounting cavity, and the movable permanent magnet is arranged in an annular shape and sleeved on the periphery of the mounting member, and the fixed permanent magnet is distributed in an annular shape on the periphery of the movable permanent magnet and cooperates with the magnetic properties of the movable permanent magnet to form a magnetic levitation structure; Wherein, the movable permanent magnet includes two permanent magnet parts arranged in an annular shape, the two permanent magnet parts are both sleeved on the periphery of the mounting member and spaced along the first direction, and the spacing between the two permanent magnet parts can be adjusted, the mounting member includes a mounting rod, a mounting sleeve and a locking member, the mounting rod extends along the first direction, the mounting sleeve is sleeved on the periphery of the mounting rod and is gap-matched with the mounting rod, the locking member is used to lock the mounting sleeve on the mounting rod, one of the two permanent magnet parts is mounted on the periphery of the mounting sleeve, and the other is mounted on the periphery of the mounting rod, an annular groove is concavely provided on one end surface of the mounting sleeve, a groove side wall of the annular groove is provided with a plurality of protrusions, and the plurality of protrusions are spaced along the circumference of the annular groove, the locking member is set as an annular clamping block, the annular clamping block is arranged in the annular groove, and a plurality of matching blocks corresponding to the plurality of protrusions are provided, the annular clamping block has a locking state in which each matching block abuts against the corresponding each protrusion, and an unlocking state in which each matching block is located in the gap between two adjacent protrusions.

2. The magnetic suspension structure according to claim 1, characterized in that: The magnetic suspension structure further includes a movable seat and a fixed seat, wherein the movable seat is floatingly mounted on one end of the fixed cylinder along a first direction, and the fixed seat is mounted on the other end of the fixed cylinder; Two ends of the mounting member are respectively connected to the movable seat and the fixed seat.

3. The magnetic suspension structure according to claim 2, characterized in that: The magnetic suspension structure further includes at least two elastic stoppers, both of which extend along the second direction and are spaced apart along the first direction, the second direction is perpendicular to the first direction, one of the two elastic stoppers is installed on the fixed seat, and the other is installed in the installation cavity and is arranged close to the movable seat; The mounting member is connected to the two elastic limiting members so as to be movably disposed in the mounting cavity along a first direction.

4. The magnetic suspension structure according to claim 3, characterized in that: The mounting cavity is formed with an annular boss at a position close to the movable seat and at the fixed seat; Each of the elastic limiting members is configured as an annular leaf spring, and the peripheral side of each of the annular leaf springs is fixed to the corresponding annular bosses; The mounting member is fixed in the inner rings of the two annular leaf springs.

5. The magnetic suspension structure according to claim 2, characterized in that: The end surface of the mounting member facing the movable seat is concavely provided with a mounting hole, and the mounting hole extends along a first direction; The mounting assembly further comprises a vibration-damping rod, which is arranged in the mounting hole, and one end of the vibration-damping rod is connected to the movable seat.

6. The magnetic suspension structure according to claim 5, characterized in that: The vibration damping rod is flexibly arranged.

7. The magnetic suspension structure according to claim 1, characterized in that: A plurality of said protrusions are arranged on the groove side wall inside the said annular groove; A groove side wall on the outer side of the annular groove is provided with a plurality of first threaded through holes extending along the second direction, and the plurality of first threaded through holes are distributed at intervals along the circumference of the annular groove.

8. The magnetic suspension structure according to claim 1, characterized in that: The fixing tube comprises: A cylinder, wherein a mounting opening is provided on the circumference of the cylinder, the mounting opening corresponds to the mounting sleeve and is used to expose the annular groove to the external environment; and A fixing plate is installed on the periphery of the cylinder and covers the installation opening.

9. The magnetic suspension structure according to claim 2, characterized in that: A limited position cavity is formed between the fixing seat and the end surface of the fixed permanent magnet; The mounting assembly further includes a limiting ring, which is sleeved on the periphery of the mounting rod and located in the limiting cavity, and the limiting ring protrudes from the fixed permanent magnet along the second direction.

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