Magnetic suspension structure

Abstract

The invention relates to a magnetic suspension structure, which comprises a fixed cylinder and a mounting assembly, and is characterized in that the fixed cylinder is provided with a mounting cavity penetrating along a first direction; the mounting assembly comprises a mounting part, a movable permanent magnet and a fixed permanent magnet, the mounting part extends in the first direction and is movably arranged in the mounting cavity in the first direction, and the movable permanent magnet and the fixed permanent magnet are both arranged in the mounting cavity; the movable permanent magnet is annularly arranged and arranged on the periphery of the mounting piece in a sleeving mode, and the fixed permanent magnets are annularly distributed on the periphery of the movable permanent magnet and matched with the movable permanent magnet in a magnetic mode to form a magnetic levitation structure. The shock absorber aims at solving the problem that an existing shock absorber is poor in vibration isolation performance on a high-frequency part.

Description

Technical Field

[0001] The invention relates to the field of precision vibration reduction, and in particular to a magnetic suspension 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 fixation, 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 suspension structure to solve the problem that the existing vibration absorber has poor vibration isolation performance for high-frequency parts.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A magnetic suspension structure, comprising: A fixing cylinder, comprising a mounting cavity extending through along a first direction; and The mounting assembly includes a mounting part, a movable permanent magnet and a fixed permanent magnet. The mounting part 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. The movable permanent magnet is arranged in a ring shape and is sleeved on the periphery of the mounting part. The fixed permanent magnet is distributed in a ring shape on the periphery of the movable permanent magnet and cooperates with the magnetism of the movable permanent magnet to form a magnetic levitation structure.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows: Furthermore, the magnetic suspension structure further includes a movable seat and a fixed seat, wherein the movable seat is installed at one end of the fixed cylinder in a floating manner along a first direction, and the fixed seat is installed at the other end of the fixed cylinder; Two ends of the mounting member are respectively connected to the movable seat and the fixed seat.

[0006] Further, 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 arranged 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.

[0007] Furthermore, an annular boss is formed at a position of the installation cavity 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.

[0008] Furthermore, the end surface of the mounting member facing the movable seat is concavely provided with a mounting hole, and the mounting hole extends along the 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.

[0009] Furthermore, the vibration damping rod is flexibly configured.

[0010] Furthermore, the movable permanent magnet includes two permanent magnet parts arranged in a ring shape, the two permanent magnet parts are both sleeved on the periphery of the mounting member and spaced apart along the first direction, and the distance between the two permanent magnet parts can be adjusted.

[0011] Further, the mounting member includes a mounting rod, a mounting sleeve and a locking member, the mounting rod extends along a first direction, the mounting sleeve is sleeved on the periphery of the mounting rod and is loosely matched with the mounting rod, and the locking member is used to lock the mounting sleeve on the mounting rod; One of the two permanent magnet parts is installed on the periphery of the mounting sleeve, and the other is installed on the periphery of the mounting rod.

[0012] Furthermore, an annular groove is concavely formed on one end surface of the mounting sleeve, a plurality of protrusions are formed on a side wall of the annular groove, and the plurality of protrusions are spaced apart and distributed along the circumference of the annular groove; The locking member is configured as an annular clamping block, which is disposed in the annular groove and is provided with a plurality of matching blocks corresponding one to one with the plurality of protrusions. The annular clamping block has a locking state in which each matching block abuts against each corresponding protrusion, and an unlocking state in which each matching block is located in a gap between two adjacent protrusions.

[0013] Furthermore, a plurality of the protrusions are arranged on the groove side wall inside the 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.

[0014] Furthermore, the fixing tube includes: 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.

[0015] Furthermore, 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.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The mounting member is movably mounted in the mounting cavity along a first direction. When the magnetic suspension structure is vibrated, the mounting member moves along the first direction, so that the movable permanent magnet also moves along the first direction. At this time, due to the influence of the magnetic field between the movable permanent magnet and the fixed permanent magnet, the movable permanent magnet is reset, thereby achieving efficient vibration isolation and stable compensation of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a magnetic suspension structure provided by an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional exploded cross-sectional schematic diagram; Figure 3 A schematic cross-sectional view of a magnetic suspension structure provided by an embodiment of the present invention; Figure 4 It is a structural schematic diagram of an installation component in an embodiment of the present invention; Figure 5 A schematic structural diagram of another perspective of the installation assembly in an embodiment of the present invention (including a portion of fixed permanent magnets); Figure 6 is a top view schematic diagram of an installation assembly in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a mounting member in an embodiment of the present invention; Figure 8 Schematic cross-sectional view of the mounting member in the embodiment of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. fixing cylinder; 11. cylinder body; 111. mounting cavity; 112. mounting opening; 12. fixing plate; 2. mounting assembly; 21. mounting member; 211. mounting rod; 2111. mounting hole; 21111. third hole portion; 21112. fourth hole portion; 212. mounting sleeve; 2121. annular groove; 2122. convex block; 2123. first threaded through hole; 213. locking member; 2131. annular block; 2132. matching member Block; 214, limiting nut; 22, movable permanent magnet; 221, permanent magnet portion; 23, fixed permanent magnet; 24, elastic limiting member; 241, annular leaf spring; 25, vibration damping rod; 251, rod body; 252, connecting portion; 2521, threaded hole; 253, pressing ring; 26, limiting ring; 3, movable seat; 31, first hole portion; 32, second hole portion; 4, fixed seat; 41, limiting cavity; 5, annular boss; 6, mounting ring. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the 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.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] 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. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] Please refer to Figure 1 and Figure 3 The present invention provides a magnetic suspension structure, including a fixed cylinder 1 and a mounting assembly 2, wherein the fixed cylinder 1 includes a mounting cavity 111 extending along a first direction, and the mounting assembly 2 includes a mounting member 21, a movable permanent magnet 22 and a fixed permanent magnet 23, wherein the mounting member 21 extends along the first direction and is movably arranged in the mounting cavity 111 along the first direction, wherein the movable permanent magnet 22 and the fixed permanent magnet 23 are both arranged in the mounting cavity, and the movable permanent magnet 22 is arranged in an annular shape and is sleeved on the periphery of the mounting member 21, and the fixed permanent magnet 23 is distributed in an annular shape on the periphery of the movable permanent magnet 22 and is connected to the fixed cylinder, and a magnetic suspension support effect can be formed by reasonably designing the magnetic pole directions of the movable permanent magnet 22 and the fixed permanent magnet 23, which belongs to the prior art and is not limited by this patent.

[0025] In this embodiment, the mounting member 21 is movably mounted in the mounting cavity 111 along a first direction. When the magnetic suspension 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 influence of the magnetic field between the movable permanent magnet 22 and the fixed permanent magnet 23, the movable permanent magnet 22 is reset, thereby achieving efficient vibration isolation and stable compensation of gravity.

[0026] In order to better transmit vibration, the magnetic suspension structure further includes a movable seat 3 and a fixed seat 4. The movable seat 3 is floatingly mounted on one end of the fixed cylinder 1 along the first direction, and the fixed seat 4 is mounted on the other end of the fixed cylinder 1; the two 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 the load, and the fixed seat 4 is used to be fixed to the ground, thereby isolating the load. At this time, the second direction is the horizontal direction, and the first direction is the vertical direction.

[0027] In order to movably install the mounting member 21 in the mounting cavity 111 along the first direction. Further, the magnetic suspension structure also includes at least two elastic limiting members 24, 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 limiting members 24 is installed on the fixed seat 4, and the other is installed in the mounting cavity 111 and is arranged close to the movable seat 3; the mounting member 21 is connected to the two elastic limiting members 24 to be movably arranged in the mounting cavity along the first direction.

[0028] In this embodiment, the two elastic limiters 24 are fixed in the fixing seat 4 and the fixing cylinder 1, respectively. And the mounting member 21 is connected to the two elastic limiters 24. The rigidity of each elastic limiter 24 in the second direction is much greater than the rigidity in the first direction, thereby limiting the displacement of the mounting member 21 in the second direction, so that the mounting member 21 tends to be able to move only in the first direction. And during the movement of the mounting member 21 in the first direction, the two elastic limiters will also reset after deformation, and work together with the movable permanent magnet 22 and the fixed permanent magnet 23 to achieve vibration reduction in the first direction.

[0029] Specifically, in this embodiment, refer to Figure 3 , an annular boss 5 is formed at the position of the mounting cavity 111 close to the movable seat 3 and the fixed seat 4. Each of the elastic limit members 24 is configured as an annular leaf spring 241, and the circumferential side of each of the annular leaf springs 241 is fixed to the corresponding annular boss 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 the stiffness in the first direction, so that the two annular leaf springs 241 can limit the movement of the mounting rod 211 in the second direction, ensuring that the mounting rod 211 can move in the first direction to reduce vibration. In this way, the structure is stable.

[0030] Specifically, continue to refer to Figures 3 to 6 Each of the annular bosses 5 is provided with a plurality of second threaded through holes extending along the first direction, and the plurality of second threaded through holes are distributed at intervals along the circumference of each of the annular bosses 5; each of the annular leaf springs 241 is provided with a plurality of connecting holes penetrating along the first direction, and the plurality of connecting holes correspond one-to-one to the plurality of second threaded through holes, and each of the connecting holes is connected to the corresponding second threaded through holes by bolts, so that each of the annular leaf springs 241 is fixed to the corresponding annular bosses 5.

[0031] 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 is inserted into the inner hole of each of the annular leaf springs 241, and the end of the mounting rod 211 close to the fixed seat 4 is formed with a step surface facing the fixed seat 4, two of the limiting nuts 214 are screwed to the end of the mounting rod 211 close to the movable seat 3 and jointly clamp the corresponding annular leaf springs 241, and the other limiting nut 214 is screwed to the end of the mounting rod 211 close to the fixed seat 4 and jointly clamps the corresponding annular leaf spring 241 with the step surface, thereby connecting the mounting rod 211 with the two annular leaf springs 241.

[0032] In this embodiment, refer to Figure 3 , the two ends of the mounting rod 211 are respectively inserted into the inner rings of the two annular leaf springs 241. Each of the bolts passes through each of the connecting holes and is connected to the corresponding second threaded through holes, thereby fixing the circumference of each of the annular leaf springs 241 to the corresponding annular bosses 5. Among them, two of the limiting nuts 214 are screwed to the end of the mounting rod 211 close to the movable seat 3, and the two limiting nuts 214 are respectively located on both sides of the corresponding annular leaf spring 241 distributed along the first direction, and the two limiting nuts 214 are tightened toward 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 to the end of the mounting rod 211 close to the fixed seat 4. The step surface and the limiting nut 214 are respectively located on both sides of the corresponding annular leaf spring 241 distributed along the first direction, and the limiting nut 214 is tightened toward the step surface, so as to fix the corresponding annular leaf spring 241 to the end of the mounting rod 211 close to the fixing seat 4. In this way, disassembly, assembly, maintenance and adjustment are convenient.

[0033] 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 stopper 24 can also be configured as a plurality of strip leaf springs, one end of which is fixedly connected to the end of the mounting rod 211, and the other end of which is connected to the annular boss 5 and distributed at intervals along the circumference of the annular boss 5. Thus, the mounting rod 211 can be limited from moving in the second direction, that is, along the radial direction of the mounting rod 211.

[0034] It should be noted that there is no restriction on the extension direction of the plurality of strip leaf springs, as long as one end of the plurality of strip leaf springs is 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 direction of each of the strip leaf springs can be perpendicular to the first direction, or can be inclined toward the movable seat 3 or the fixed seat 4.

[0035] In order to improve the vibration reduction performance, in this embodiment, reference Figure 3 and Figure 8 The end surface of the mounting member 21 facing the movable seat 3 is concavely provided with a mounting hole 2111, and the mounting hole 2111 extends along the first direction; the mounting assembly also includes a vibration-damping rod 25, and the vibration-damping rod 25 is arranged in the mounting 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 mounting member 21 through the vibration-damping rod 25, and the vibration-damping rod 25 drives the mounting member 21 to move along the first direction, so that the vibration-damping rod 25 and the two elastic limiting members 24 are connected in series to achieve vibration reduction 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 limiting members 24 work together to achieve efficient vibration isolation in all directions.

[0036] It should be noted that the state in which the vibration-damping rod 25 is installed in the installation hole 2111 is not limited. The vibration-damping rod 25 can be stuck in the installation hole 2111 , and the vibration-damping rod 25 can also be fixedly connected in the installation hole 2111 .

[0037] Specifically, in order to connect the vibration-damping rod 25 to the movable seat 3, in this embodiment, refer 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 is inserted into the mounting hole 2111. 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 on the end surface 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 along a first direction and are connected. 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 passing a bolt through the first hole portion 31 and connecting to the threaded hole. In addition, at least the portion of the connecting portion 252 connected to the rod body 251 is reduced in the direction close to the rod body 251, thereby strengthening the structure of the vibration damping rod 25.

[0038] In this embodiment, continue to refer to Figure 3 and Figure 7The vibration damping rod 25 further includes a pressing ring 253, which is connected to the periphery of the rod body 251 and is arranged near the fixing 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 the diameter of the fourth hole portion 21112, and is adapted to the pressing ring 253. 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 through the connecting portion 252 is directly transmitted to the end of the mounting rod 211 near the fixing seat 4 through the pressing ring 253, and then transmitted to the annular leaf spring 241 connected to the fixing seat 4. Together with the annular leaf spring 241, the vibration damping effect in the second direction is achieved, and the mounting rod 211 is prevented from moving in its radial direction, and the stability is strong.

[0039] Furthermore, in this embodiment, the vibration-damping rod 25 is flexibly configured, and can achieve horizontal vibration reduction by cooperating with the elastic limiting member 24 .

[0040] 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 vertically arranged, in this embodiment, the first direction is the vertical direction, and the second direction is the horizontal direction. 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.

[0041] In this embodiment, refer to Figures 3 to 6 The movable permanent magnet 22 includes two permanent magnet parts 221 arranged in an annular shape. The two permanent magnet parts 221 are both sleeved on the periphery of the mounting member 21 and spaced apart along the first direction, and the distance between the two permanent magnet parts 221 can be adjusted. Thus, by adjusting the distance between the two permanent magnet parts 221, the acting force between the two permanent magnet parts 221 and the fixed permanent magnet 23 can be adjusted, thereby adjusting the bearing capacity of the magnetic suspension structure.

[0042] It should be noted that the fixed permanent magnet 23 is composed of a plurality of magnets arranged in circular arc segments and distributed in a circular manner. In this embodiment, the magnetic suspension structure further includes a mounting ring 6, on which the fixed permanent magnet 23 is mounted, and the mounting ring 6 is threadedly connected to the cavity wall of the mounting cavity 111, so that the fixed permanent magnet 23 can also be adjusted in position along the first direction to further adjust the bearing capacity of the magnetic suspension structure.

[0043] More specifically, in this embodiment, referring to Figure 3The 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 on the periphery of the mounting rod 211 and is loosely matched with the mounting rod 211. The locking member 213 is used to lock the mounting sleeve 212 on the mounting rod 211. One of the two permanent magnet parts 221 is mounted on the periphery of the mounting sleeve 212, and the other is mounted on the periphery of the mounting rod 211. The locking member 213 is released from locking the mounting sleeve 212 to adjust the mounting sleeve 212 in the first direction. After the adjustment is completed, the locking member 213 locks the mounting sleeve 212 on the mounting rod 211. Thus, the distance between the two permanent magnet parts 221 can be adjusted. In this way, the structure is simple and easy to set.

[0044] In another embodiment, at least part of the periphery of the mounting rod 211 is provided with threads, the mounting sleeve 212 is screwed to the 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 parts 221.

[0045] The structure of the locking member is not limited in the present invention. Figures 3 to 8 , an annular groove 2121 is concavely formed on one end surface of the mounting sleeve 212, and a plurality of protrusions 2122 are formed on a side wall of the annular groove 2121, and the plurality of protrusions 2122 are distributed at intervals along the circumference of the annular groove 2121; the locking member 213 is configured as an annular clamping block 2131, and the annular clamping block 2131 is disposed in the annular groove 2121, and is provided with a plurality of matching blocks 2132 corresponding to the plurality of protrusions 2122 one by one, and the annular clamping block 2131 has a locking state in which each matching block 2132 abuts against the protrusion 2122, and an unlocking state in which each matching block 2132 is located in a gap between two adjacent protrusions 2122.

[0046] The annular clamping block 2131 is installed in the annular groove 2121, and the annular clamping block 2131 is rotated so that each of the matching blocks 2132 abuts against each of the protrusions 2122, which is equivalent to the annular clamping block 2131 being clamped in the annular groove 2121, and the part of the mounting sleeve 212 located inside the annular groove 2121 abuts against the mounting rod 211, thereby firmly fixing the mounting sleeve 212 on the mounting rod 211, and preventing the mounting sleeve 212 from loosening during a long period of vibration reduction. In this way, the vibration reduction stability is good and the vibration reduction accuracy is improved.

[0047] In addition, when the position of the installation sleeve 212 needs to be adjusted, the annular clamping block 2131 is switched from the locked state to the unlocked state, and the annular clamping block 2131 is rotated in the opposite direction, so that each of the matching blocks 2132 is located between the gaps of two adjacent protrusions 2122, thereby releasing the pressure on the inner part of the installation sleeve 212 located in the annular groove 2121. In this way, the connection is ingenious and the operation is simple.

[0048] In another embodiment, the locking member may be two clips clamped on the mounting rod 211 , and the two clips are respectively abutted against two ends of the mounting sleeve 212 .

[0049] Further, in this embodiment, continue to refer to Figures 3 to 6 The plurality of protrusions 2122 are arranged on the inner sidewall of the annular groove 2121; the outer sidewall of the annular groove 2121 is provided with a plurality of first threaded through holes 2123 extending along the second direction, and the plurality of first threaded through holes 2123 are distributed at intervals along the circumference of the annular groove 2121. The plurality of bolts are screwed into the plurality of first threaded through holes 2123 one by one and abut against the outer periphery of the annular clamping block 2131, so that the annular clamping block 2131 abuts against the inner sidewall of the annular groove 2121, and is fixed more firmly, further improving stability.

[0050] In this embodiment, refer to Figures 1 to 4 as well as Figure 8 The fixed cylinder 1 includes a cylinder body 11 and a fixing plate 12. A mounting opening 112 is provided on the peripheral side of the cylinder body 11. The mounting 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 is covered at the mounting opening 112. The fixing plate 12 is detachably mounted on the cylinder body 11 by bolts, so that the bolts connected to each of the first threaded through holes 2123 and the annular block 2131 can be removed through the mounting opening 112 by disassembling the fixing plate 12 to adjust the position of the mounting sleeve 212. When the position of the mounting sleeve 212 needs to be adjusted, there is no need to disassemble the entire cylinder body 11. In this way, the adjustment operation is simplified.

[0051] In this embodiment, refer to Figure 3, a limited cavity 41 is formed between the fixing seat 4 and the end surface of the fixed permanent magnet 23; the mounting assembly 2 further includes a limit ring 26, which is sleeved on the periphery of the mounting rod 211 and is located in the limit cavity 41, and the limit ring 26 protrudes from the fixed permanent magnet 23 along the second direction. The limit ring 26 moves along the first direction with the mounting rod 211, and is in a suspended state in a normal working state, without contacting any other structural parts, and belongs to mechanical limit protection. Under abnormal conditions, it can limit the travel of the mounting rod 211 along the first direction, play a mechanical protection effect, and improve safety performance.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should 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 includes a mounting part, a movable permanent magnet and a fixed permanent magnet. The mounting part 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. The movable permanent magnet is arranged in a ring shape and is sleeved on the periphery of the mounting part. The fixed permanent magnet is distributed in a ring 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.

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: The movable permanent magnet comprises 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 apart along the first direction. The distance between the two permanent magnet parts is adjustable.

8. The magnetic suspension structure according to claim 7, characterized in that: The mounting member comprises a mounting rod, a mounting sleeve and a locking member, wherein the mounting rod extends along a first direction, the mounting sleeve is sleeved on the periphery of the mounting rod and is loosely matched with the mounting rod, and the locking member is used to lock the mounting sleeve on the mounting rod; One of the two permanent magnet parts is installed on the periphery of the mounting sleeve, and the other is installed on the periphery of the mounting rod.

9. The magnetic suspension structure according to claim 8, characterized in that: An annular groove is concavely formed on one end surface of the mounting sleeve, and a plurality of protrusions are provided on a side wall of the annular groove, and the plurality of protrusions are distributed at intervals along the circumference of the annular groove; The locking member is configured as an annular clamping block, which is disposed in the annular groove and is provided with a plurality of matching blocks corresponding one to one with the plurality of protrusions. The annular clamping block has a locking state in which each matching block abuts against each corresponding protrusion, and an unlocking state in which each matching block is located in a gap between two adjacent protrusions.

10. The magnetic suspension structure according to claim 9, 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.

11. The magnetic suspension structure according to claim 9, 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.

12. The magnetic suspension structure according to claim 1, 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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