High-speed bearing

Abstract

The invention discloses a high-speed bearing which comprises a bearing seat, a permanent magnet lantern ring, a magnetic conducting ring, a rotating shaft, a first-stage bearing assembly and a second-stage bearing assembly. The permanent magnet rotating ring, the magnetic conducting ring and the permanent magnet fixing ring are movably sleeved in sequence from inside to outside; the permanent magnet fixing ring is connected with the bearing seat; the rotating shaft is connected with the magnetic ring; the first-stage bearing assembly and the second-stage bearing assembly are connected in series through the permanent magnet lantern ring and the magnetic conductive ring. According to the high-speed bearing provided by the invention, the permanent magnet lantern ring, the magnetic conductive ring, the first-stage bearing assembly and the second-stage bearing assembly are arranged on the rotating shaft, and the first-stage bearing assembly and the second-stage bearing assembly are connected in series, so that the permanent magnet lantern ring and the magnetic conductive ring can transmit torque generated by rotation of the first-stage bearing assembly to the second-stage bearing assembly to enable the second-stage bearing assembly to rotate; the working load of a single bearing assembly can be shared, and the friction loss of the bearing and the generated heat are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and in particular to a high-speed bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy.

[0003] Bearings usually include an outer ring, an inner ring and rolling elements. When the bearing rotates, there is rolling friction between the rolling elements and the outer ring and the inner ring. The higher the speed, the greater the friction loss. Therefore, each bearing has its upper speed limit. If the upper speed limit is exceeded, the life of the bearing will be greatly reduced, increasing the cost of use. Since a bearing is affected by friction loss when it rotates, there is an upper limit to the speed that each bearing can withstand. Therefore, high-speed bearings are mostly connected in series with two or more rings of bearings. When the inner ring of one of the bearings rotates driven by the power mechanism, the other bearings are driven by friction to rotate in the same direction. Compared with single-stage bearings, this type of high-speed bearing can distribute the load borne by one bearing to two or more bearings, reducing the loss of the bearing and increasing the upper limit of the power input speed that can be tolerated.

[0004] However, the rotation of this type of high-speed bearing is completely driven by friction, and there is still a large friction loss. In addition, when the bearing rotates at high speed, it will also generate a lot of heat due to friction, causing a large energy loss.

[0005] The patent with application number 202210286703.X discloses a high-speed bearing that uses a special-shaped magnetic conductor with low magnetic permeability and is difficult to process. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a high-speed bearing in which a permanent magnetic ring drives a series bearing to rotate, so as to reduce the friction loss and heat generated by the bearing and realize the same-direction rotation. The specific scheme is:

[0007] A high-speed bearing, comprising:

[0008] Bearing seat;

[0009] A permanent magnet ring, comprising a permanent magnet rotating ring and a permanent magnet fixed ring which are movably sleeved inside and outside, and the permanent magnet fixed ring is arranged around the bearing seat;

[0010] The magnetic conductive ring is rotatably sleeved between the permanent magnetic rotating ring and the permanent magnetic fixed ring;

[0011] A rotating shaft, coaxially connected to the magnetic conductive ring;

[0012] A primary bearing assembly, comprising a primary outer ring, a primary inner ring and a primary rolling element rollingly connected therebetween, wherein one of the primary outer ring and the primary inner ring is coaxially connected to the rotating shaft, and the other is connected to the permanent magnet rotating ring;

[0013] The secondary bearing assembly comprises a secondary outer ring, a secondary inner ring and a secondary rolling body rollingly connected therebetween, wherein one of the secondary outer ring and the secondary inner ring is coaxially connected to the primary outer ring or the primary inner ring, and the other is connected to the bearing seat.

[0014] Preferably,

[0015] The permanent magnet rotating ring comprises a plurality of primary permanent magnets connected in series, and the polarities of any two adjacent primary permanent magnets along the same direction are different so that the permanent magnet rotating ring has a plurality of pairs of first magnetic poles;

[0016] The permanent magnet fixing ring comprises a plurality of secondary permanent magnets connected in series, and the polarities of any two adjacent secondary permanent magnets along the same direction are different so that the permanent magnet fixing ring has multiple pairs of second magnetic poles;

[0017] The magnetic conductive ring comprises a plurality of magnetic conductive bodies which are arranged in a surrounding manner and at intervals.

[0018] Preferably,

[0019] The primary inner ring is connected to the rotating shaft;

[0020] The primary outer ring is connected to the secondary inner ring to form a rotating sleeve with different diameters.

[0021] Preferably,

[0022] The primary outer ring is connected to the rotating shaft;

[0023] The primary inner ring is connected to the secondary inner ring to form a rotating inner sleeve, and the rotating inner sleeve is connected to the permanent magnet rotating ring.

[0024] Preferably,

[0025] The primary inner ring is connected to the rotating shaft;

[0026] The primary outer ring is connected to the secondary outer ring to form a rotating outer sleeve, and the rotating outer sleeve is connected to the permanent magnet rotating ring.

[0027] Preferably, it also includes a three-stage bearing assembly, the three-stage bearing assembly includes:

[0028] Three-level outer ring;

[0029] A three-stage inner ring, a movable sleeve is arranged inside the three-stage outer ring, one of the three-stage outer ring and the three-stage inner ring is connected to the two-stage outer ring or the two-stage inner ring to form a rotating sleeve, and the other is connected to the bearing seat, and the rotating sleeve is connected to the permanent magnet rotating ring;

[0030] The tertiary rolling element is rollingly connected between the tertiary outer ring and the tertiary inner ring.

[0031] Preferably,

[0032] The primary permanent magnet and / or the secondary permanent magnet are twisted and tilted along the circumferential direction of the rotating shaft;

[0033] The magnetic conductor is twisted and tilted along the circumferential direction of the rotating shaft.

[0034] Preferably,

[0035] The inner walls of the primary outer ring and the secondary outer ring are surrounded by an outer raceway;

[0036] The outer walls of the primary inner ring and the secondary inner ring are surrounded by an inner raceway, and the primary rolling body and the secondary rolling body are arranged between the outer raceway and the inner raceway.

[0037] Preferably,

[0038] The primary outer ring and the secondary outer ring have equal diameters;

[0039] The primary inner ring and the secondary inner ring have the same diameter.

[0040] Preferably, a supporting block is provided around the circumference of the rotating shaft, and the supporting block is connected to the magnetic conductive ring.

[0041] A high-speed bearing provided by the present invention has a permanent magnetic ring, a magnetic conductive ring, and a primary bearing assembly and a secondary bearing assembly connected in series on a rotating shaft, so that the permanent magnetic ring and the magnetic conductive ring can transmit the torque generated by the rotation of the primary bearing assembly to the secondary bearing assembly to make it rotate, which can not only share the workload of a single group of bearing assemblies, but also reduce the friction loss of the bearings and the heat generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the three-dimensional structure of a high-speed bearing provided in an embodiment of the present invention;

[0044] Figure 2 An exploded view of the structure of a high-speed bearing provided in an embodiment of the present invention;

[0045] Figure 3 A sectional front view of a high-speed bearing in Example 1 provided in an embodiment of the present invention;

[0046] Figure 4 A sectional front view of a high-speed bearing in Example 2 provided in an embodiment of the present invention;

[0047] Figure 5 A sectional front view of a high-speed bearing in Example 3 provided in an embodiment of the present invention;

[0048] Figure 6 A sectional front view of a high-speed bearing in Example 4 provided in an embodiment of the present invention;

[0049] Figure 7 A schematic diagram of the three-dimensional structure of a permanent magnet rotating ring provided in an embodiment of the present invention;

[0050] Figure 8 A schematic diagram of the three-dimensional structure of a permanent magnet fixing ring provided in an embodiment of the present invention;

[0051] Fig. 9 A schematic diagram of the three-dimensional structure of a magnetic conductive ring provided in an embodiment of the present invention.

[0052] Reference numerals

[0053] 1-Bearing seat;

[0054] 2-permanent magnet ring; 21-permanent magnet rotating ring; 211-primary permanent magnet; 22-permanent magnet fixed ring; 221-secondary permanent magnet;

[0055] 3-magnetic ring; 31-magnetic body;

[0056] 4-rotating shaft; 41-supporting block;

[0057] 5-first-level bearing assembly; 51-first-level outer ring; 52-first-level inner ring; 53-first-level rolling element;

[0058] 6-secondary bearing assembly; 61-secondary outer ring; 62-secondary inner ring; 63-secondary rolling element;

[0059] 7- three-stage bearing assembly; 71- three-stage outer ring; 72- three-stage inner ring; 73- three-stage rolling element. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0061] It should be noted that similar reference numerals denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0062] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0063] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] See also Figures 1 to 9 This embodiment provides a high-speed bearing, including a bearing seat 1, a permanent magnetic ring 2, a magnetic conductive ring 3, a rotating shaft 4, a primary bearing assembly 5 and a secondary bearing assembly 6.

[0066] The permanent magnet ring 2 comprises a permanent magnet rotating ring 21 and a permanent magnet fixed ring 22 which are movably fitted inside and outside. The permanent magnet fixed ring 22 is disposed around the bearing seat 1 .

[0067] The magnetic conductive ring 3 is rotatably sleeved between the permanent magnetic rotating ring 21 and the permanent magnetic fixed ring 22 .

[0068] The rotating shaft 4 is coaxially connected to the magnetic ring 3 .

[0069] The primary bearing assembly 5 includes a primary outer ring 51, a primary inner ring 52 and a primary rolling body 53 rollingly connected therebetween. One of the primary outer ring 51 and the primary inner ring 52 is coaxially connected to the rotating shaft 4, and the other is connected to the permanent magnet rotating ring 21.

[0070] The secondary bearing assembly 6 includes a secondary outer ring 61, a secondary inner ring 62, and a secondary rolling body 63 rollingly connected therebetween. One of the secondary outer ring 61 and the secondary inner ring 62 is coaxially connected to the primary outer ring 51 or the primary inner ring 52, and the other is connected to the bearing seat 1.

[0071] Among them, the bearing seat 1 can be circular or sleeve-shaped. If the bearing seat 1 is circular, one side of the permanent magnet fixing ring 22 can be fixedly connected to the surface of the bearing seat 1, and the two are surrounded to form a sleeve shape. If the bearing seat 1 is sleeve-shaped, the outer side of the permanent magnet fixing ring 22 can be fitted on the inner surface of the bearing seat 1, and the permanent magnet fixing ring 22, the magnetic conductive ring 3 and the permanent magnet rotating ring 21 are movably fitted from the outside to the inside.

[0072] Among them, the permanent magnet ring 2 and the magnetic conductive ring 3 can be combined to form a magnetic gear. The inner rotor, outer rotor and magnetic adjustment ring of the magnetic gear respectively correspond to the permanent magnet rotating ring 21, permanent magnet fixed ring 22 and magnetic conductive ring 3 provided in this embodiment. The inner rotor and the outer rotor have different numbers of magnetic pole pairs and are separated by a very small air gap. The magnetic adjustment ring can adjust the magnetic field generated by the inner and outer rotors and generate spatial harmonics in the air gap. The adjusted magnetic field interacts with the magnetic field on the other side through the magnetic adjustment ring, thereby transmitting torque. Therefore, in this embodiment, when the rotating shaft 4 rotates to drive the magnetic conductive ring 3 to rotate, the magnetic conductive ring 3 can adjust the magnetic field generated by the permanent magnet fixed ring 22 and the permanent magnet rotating ring 21, so that the permanent magnet rotating ring 21 rotates in the same direction as the magnetic conductive ring 3 at a certain speed ratio.

[0073] Among them, the first-level bearing assembly 5 and the second-level bearing assembly 6 can be standard bearings, the first-level rolling body 53 and the second-level rolling body 63 can be rollers in the bearings, and any one of the first-level outer ring 51 and the first-level inner ring 52 is coaxially connected to the rotating shaft 4. When the rotating shaft 4 rotates, the magnetic ring 3 and the first-level outer ring 51 or the first-level inner ring 52 connected to the rotating shaft 4 rotate accordingly, and make the permanent magnet rotating ring 21 and the first-level inner ring 52 or the first-level outer ring 51 connected thereto rotate in the same direction according to a certain speed ratio. When they rotate, they synchronously drive the second-level outer ring 61 or the second-level inner ring 62 connected thereto, so that the second-level bearing assembly 6 and the first-level bearing assembly 5 connected in series rotate synchronously to share the workload of the first-level bearing assembly 5, and because the second-level bearing assembly 6 rotates under the drive of magnetic force, it can effectively reduce friction loss and heat generated.

[0074] Exemplarily, the primary outer ring 51 is connected to the rotating shaft 4, the primary inner ring 52 is connected to the permanent magnet rotating ring 21 and the secondary outer ring 61, and the secondary inner ring 62 is connected to the bearing seat 1. When the rotating shaft 4 rotates and drives the magnetic ring 3 and the primary outer ring 51 to rotate, the permanent magnet rotating ring 21 rotates in the same direction as the primary outer ring 51 according to a certain speed ratio, and drives the secondary outer ring 61 to rotate synchronously;

[0075] Exemplarily, the primary inner ring 52 is connected to the rotating shaft 4, the primary outer ring 51 is connected to the permanent magnet rotating ring 21 and the secondary outer ring 61, and the secondary inner ring 62 is connected to the bearing seat 1. When the rotating shaft 4 rotates and drives the magnetic ring 3 and the primary inner ring 52 to rotate, the permanent magnet rotating ring 21 rotates in the same direction as the primary inner ring 52 according to a certain speed ratio, and drives the secondary outer ring 61 to rotate synchronously;

[0076] Exemplarily, the primary outer ring 51 is connected to the rotating shaft 4, the primary inner ring 52 is connected to the permanent magnet rotating ring 21 and the secondary inner ring 62, and the secondary outer ring 61 is connected to the bearing seat 1. When the rotating shaft 4 rotates and drives the magnetic ring 3 and the primary outer ring 51 to rotate, the permanent magnet rotating ring 21 rotates in the same direction as the primary outer ring 51 according to a certain speed ratio, and drives the secondary inner ring 62 to rotate synchronously;

[0077] Exemplarily, the primary inner ring 52 is connected to the rotating shaft 4, the primary outer ring 51 is connected to the permanent magnet rotating ring 21 and the secondary inner ring 62, and the secondary outer ring 61 is connected to the bearing seat 1. When the rotating shaft 4 rotates and drives the magnetic ring 3 and the primary inner ring 52 to rotate, the permanent magnet rotating ring 21 rotates in the same direction as the primary inner ring 52 according to a certain speed ratio, and drives the secondary inner ring 62 to rotate synchronously.

[0078] A high-speed bearing provided in this embodiment is configured with a permanent magnetic ring, a magnetic conductive ring, and a primary bearing assembly and a secondary bearing assembly connected in series on a rotating shaft, so that the permanent magnetic ring and the magnetic conductive ring can transmit the torque generated by the rotation of the primary bearing assembly to the secondary bearing assembly to rotate it, thereby sharing the workload of a single bearing assembly and reducing the friction loss of the bearing and the heat generated.

[0079] For further information, see Figure 7 The permanent magnet rotating ring 21 includes a plurality of primary permanent magnets 211 connected in series, and the polarities of any two adjacent primary permanent magnets 211 along the same direction are different so that the permanent magnet rotating ring 21 has multiple pairs of first magnetic poles.

[0080] See also Figure 8 The permanent magnet fixing ring 22 includes a plurality of secondary permanent magnets 221 connected in series in a circumferential manner, and the polarities of any two adjacent secondary permanent magnets 221 along the same direction are different so that the permanent magnet fixing ring 22 has multiple pairs of second magnetic poles. The magnetic conductive ring 3 includes a plurality of magnetic conductive bodies 31 arranged in a circumferential manner at intervals.

[0081] See also Fig. 9The magnetic conductive ring 3 includes a plurality of magnetic conductive bodies 31 which are arranged in a circumferential manner and at intervals.

[0082] Among them, the polarities of any two adjacent primary permanent magnets 211 or secondary permanent magnets 221 along the same direction can be opposite, and multiple primary permanent magnets 211 and secondary permanent magnets 221 can also be arranged according to the Halbach array so that the permanent magnet rotating ring 21 and the permanent magnet fixed ring 22 can generate the strongest magnetic field.

[0083] Wherein, if the number of pairs of the first magnetic poles is recorded as m, the number of pairs of the second magnetic poles is recorded as n, and the number of the magnetic conductors 31 is recorded as p, then m, n and p can satisfy the following relationship:

[0084] p=m+n.

[0085] When this relationship is satisfied, the torque density that can be transmitted by the permanent magnet ring 2 and the magnetic conductive ring 3 is the largest, and the transmission speed ratio is m:n. Since the above content is the existing technology in the field of magnetic gears, it will not be elaborated in this embodiment.

[0086] In the embodiment provided in this embodiment, the permanent magnet rotating ring 21 can rotate relative to the magnetic conductive ring 3 at a specific speed ratio by adjusting the logarithm of the first magnetic pole and the logarithm of the second magnetic pole, so that the primary outer ring 51 and the primary inner ring 52 can maintain a specific differential ratio, thereby adjusting the rotational speeds carried by the primary bearing assembly 5 and the secondary bearing assembly 6 respectively.

[0087] The magnetizer 31 is arc-shaped along the circumference of the rotating shaft 4 to increase the magnetic permeability of the magnetizer 31 .

[0088] For further information, see Figure 3 , in Example 1 provided in this embodiment:

[0089] The primary inner ring 52 is connected to the rotating shaft 4 .

[0090] The primary outer ring 51 is connected to the secondary inner ring 62 to form a rotating sleeve with different diameters.

[0091] Among them, the primary outer ring 51 and the secondary inner ring 62 can be connected by a circular ring sheet to form a reducing sleeve, the large diameter end of the reducing sleeve is the primary outer ring 51, and the small diameter end of the reducing sleeve is the secondary inner ring 62. When the rotating shaft 4 rotates, the primary outer ring 51 can rotate in the same direction as the primary inner ring 52 at a certain speed ratio, thereby driving the secondary inner ring 62 to rotate relative to the secondary outer ring 61.

[0092] For further information, see Figure 4 , in Example 2 provided in this embodiment:

[0093] The primary outer ring 51 is connected to the rotating shaft 4 .

[0094] The primary inner ring 52 is connected to the secondary inner ring 62 to form a rotating inner sleeve, and the rotating inner sleeve is connected to the permanent magnet rotating ring 21 .

[0095] Among them, the primary inner ring 52 and the secondary inner ring 62 can be connected as a whole to form a rotating inner sleeve, the primary outer ring 51 and the secondary outer ring 61 are respectively movably mounted on both ends of the rotating inner sleeve, the middle part of the rotating inner sleeve protrudes outward and is connected to the permanent magnet rotating ring 21, and when the rotating shaft 4 drives the primary outer ring 51 to rotate, the rotating inner sleeve can rotate in the same direction according to a certain speed ratio.

[0096] For further information, see Figure 5 , in Example 3 provided in this embodiment:

[0097] The primary inner ring 52 is connected to the rotating shaft 4 .

[0098] The primary outer ring 51 is connected to the secondary outer ring 61 to form a rotating outer sleeve, and the rotating outer sleeve is connected to the permanent magnet rotating ring 21 .

[0099] Among them, the primary outer ring 51 can be integrally connected to the secondary outer ring 61 to form a rotating outer sleeve, the primary inner ring 52 and the secondary inner ring 62 can be rotatably arranged on the inner sides of the two ends of the rotating outer sleeve respectively, and the permanent magnet rotating ring 21 is connected to the outer side of the middle part of the rotating outer sleeve. When the rotating shaft 4 is connected to the primary inner ring 52 and rotates, the rotating outer sleeve can rotate in the same direction according to a certain speed ratio.

[0100] For further information, see Figure 6 In Example 4 provided in this embodiment, it also includes a three-stage bearing assembly 7, and the three-stage bearing assembly 7 includes a three-stage outer ring 71, a three-stage inner ring 72 and a three-stage rolling element 73.

[0101] The tertiary inner ring 72 is movably sleeved in the tertiary outer ring 71 , one of the tertiary outer ring 71 and the tertiary inner ring 72 is connected to the secondary outer ring 61 or the secondary inner ring 62 to form a rotating sleeve, and the other is connected to the bearing seat 1 , and the rotating sleeve is connected to the permanent magnet rotating ring 21 .

[0102] The tertiary rolling elements 73 are rollingly connected between the tertiary outer ring 71 and the tertiary inner ring 72 .

[0103] The difference between Example 4 and Example 2 and Example 3 is that a tertiary bearing assembly 7 is connected in series between the secondary bearing assembly 6 and the bearing seat 1. In Example 4, if the primary bearing assembly 5 and the secondary bearing assembly 6 are connected in series in the manner of Example 2, the tertiary outer ring 71 can be integrally connected to the secondary outer ring 62 to form a rotating sleeve, and the tertiary inner ring 72 is connected to the bearing seat 1; please continue to refer to Figure 6If the primary bearing assembly 5 and the secondary bearing assembly 6 are connected in series in the manner of Example 3, the tertiary inner ring 72 can be integrally connected to the secondary inner ring 62 to form a rotating sleeve, and the tertiary outer ring 71 is connected to the bearing seat 1. Of course, if there are multiple bearing assemblies connected in series, they can be connected in sequence in the above manner.

[0104] For further information, see Figures 7 to 9 , in the examples provided in this implementation:

[0105] The primary permanent magnet 211 and / or the secondary permanent magnet 221 are twisted and tilted along the circumferential direction of the rotating shaft 4 .

[0106] The magnetizer 31 is twisted and tilted along the circumferential direction of the rotating shaft 4 .

[0107] Among them, one of the primary permanent magnet 211 and the secondary permanent magnet 221, or both the primary permanent magnet 211 and the secondary permanent magnet 221 are twisted and tilted, and the tilting direction thereof can be different from the tilting direction of the magnet conductor 31 to reduce the influence of the tooth effect and reduce the jitter generated during high-speed rotation.

[0108] Furthermore, an outer raceway is provided around the inner wall of the primary outer ring 51 and the secondary outer ring 61; an inner raceway is provided around the outer wall of the primary inner ring 52 and the secondary inner ring 62; and the primary rolling body 53 and the secondary rolling body 63 are arranged between the outer raceway and the inner raceway.

[0109] Among them, see Figure 4 In Example 2 provided in the present embodiment, since the primary inner ring 52 and the secondary inner ring 62 are integrally connected to form a rotating inner sleeve, during processing, it is only necessary to clamp the inner side of the rotating inner sleeve with a clamp and then mill out the inner raceway, so the processed inner raceway has good concentricity.

[0110] See also Figure 5 In Example 3 provided in the present embodiment, since the primary outer ring 51 and the secondary outer ring 61 are integrally connected to form a rotating outer sleeve, during processing, it is only necessary to clamp the inner side of the rotating outer sleeve with a clamp and mill out the outer raceway, so the processed outer raceway has good concentricity.

[0111] Furthermore, the primary outer ring 51 and the secondary outer ring 61 have the same diameter; the primary inner ring 52 and the secondary inner ring 62 have the same diameter.

[0112] Among them, the primary bearing assembly 5 and the secondary bearing assembly 6 provided in this embodiment can be standard bearings, and the bearing specifications can be the same to reduce the same friction loss when multiple bearings work in series and facilitate the installation of the permanent magnet ring 2.

[0113] Furthermore, a supporting block 41 is disposed around the circumference of the rotating shaft 4 , and the supporting block 41 is connected to the magnetic conductive ring 3 .

[0114] The support block 41 can be an integrated protrusion surrounding the rotating shaft 4, and the outer side of the protrusion is connected to the magnetic ring 3. The support block 41 can also be a plurality of protrusions spaced around the rotating shaft 4, and the outer side of each protrusion is connected to the magnetic conductor 31.

[0115] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0116] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A high-speed bearing, characterized in that: include: Bearing seat (1); A permanent magnetic sleeve ring (2) comprises a permanent magnetic rotating ring (21) and a permanent magnetic fixed ring (22) which are movably sleeved inside and outside, and the permanent magnetic fixed ring (22) is arranged around the bearing seat (1); A magnetic conductive ring (3) is rotatably sleeved between the permanent magnetic rotating ring (21) and the permanent magnetic fixed ring (22); A rotating shaft (4) coaxially connected to the magnetic conductive ring (3); A primary bearing assembly (5) comprises a primary outer ring (51) and a primary inner ring (52) which are movably fitted together, and a primary rolling body (53) which is rollingly connected therebetween, wherein one of the primary outer ring (51) and the primary inner ring (52) is coaxially connected to the rotating shaft (4), and the other is connected to the permanent magnet rotating ring (21); A secondary bearing assembly (6) comprises a secondary outer ring (61) and a secondary inner ring (62) which are movably fitted together, and a secondary rolling body (63) which is rollingly connected between the two. One of the secondary outer ring (61) and the secondary inner ring (62) is coaxially connected to the primary outer ring (51) or the primary inner ring (52), and the other is connected to the bearing seat (1).

2. The high-speed bearing according to claim 1, characterized in that: The permanent magnet rotating ring (21) comprises a plurality of primary permanent magnets (211) connected in series, and any two adjacent primary permanent magnets (211) have different polarities along the same direction, so that the permanent magnet rotating ring (21) has a plurality of pairs of first magnetic poles; The permanent magnet fixing ring (22) comprises a plurality of secondary permanent magnets (221) connected in series, and any two adjacent secondary permanent magnets (221) have different polarities along the same direction, so that the permanent magnet fixing ring (22) has multiple pairs of second magnetic poles; The magnetic conductive ring (3) comprises a plurality of magnetic conductive bodies (31) which are arranged in a circumferential manner and at intervals.

3. The high-speed bearing according to claim 2, characterized in that: The primary inner ring (52) is connected to the rotating shaft (4); The primary outer ring (51) is connected to the secondary inner ring (62) to form a rotating sleeve with different diameters.

4. The high-speed bearing according to claim 2, characterized in that: The primary outer ring (51) is connected to the rotating shaft (4); The primary inner ring (52) is connected to the secondary inner ring (62) to form a rotating inner sleeve, and the rotating inner sleeve is connected to the permanent magnet rotating ring (21).

5. The high-speed bearing according to claim 2, characterized in that: The primary inner ring (52) is connected to the rotating shaft (4); The primary outer ring (51) is connected to the secondary outer ring (61) to form a rotating outer sleeve, and the rotating outer sleeve is connected to the permanent magnet rotating ring (21).

6. The high-speed bearing according to claim 4 or 5, characterized in that: It also includes a three-stage bearing assembly (7), wherein the three-stage bearing assembly (7) includes: The third outer ring (71); A tertiary inner ring (72), which is movably sleeved inside the tertiary outer ring (71), one of the tertiary outer ring (71) and the tertiary inner ring (72) being connected to the secondary outer ring (61) or the secondary inner ring (62) to form a rotating sleeve, and the other being connected to the bearing seat (1), and the rotating sleeve being connected to the permanent magnet rotating ring (21); The tertiary rolling element (73) is rollingly connected between the tertiary outer ring (71) and the tertiary inner ring (72).

7. The high-speed bearing according to any one of claims 1 to 5, characterized in that: The primary permanent magnet (211) and / or the secondary permanent magnet (221) are twisted and tilted circumferentially along the rotating shaft (4); The magnetic conductor (31) is twisted and tilted along the circumferential direction of the rotating shaft (4).

8. The high-speed bearing according to any one of claims 1 to 5, characterized in that: The inner walls of the primary outer ring (51) and the secondary outer ring (61) are surrounded by an outer raceway; The outer walls of the primary inner ring (52) and the secondary inner ring (62) are surrounded by inner raceways, and the primary rolling bodies (53) and the secondary rolling bodies (63) are arranged between the outer raceways and the inner raceways.

9. The high-speed bearing according to any one of claims 1 to 5, characterized in that: The primary outer ring (51) and the secondary outer ring (61) have the same diameter; The primary inner ring (52) and the secondary inner ring (62) have the same diameter.

10. The high-speed bearing according to any one of claims 1 to 5, characterized in that: A supporting block (41) is provided around the circumference of the rotating shaft (4), and the supporting block (41) is connected to the magnetic conductive ring (3).

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