Four-cell device of permanent magnet thrust bearing

Abstract

The invention provides a four-cell device of a permanent magnet thrust bearing, the four-cell device of the permanent magnet thrust bearing comprises a cell mounting device and at least one magnetic steel cell, the two sides of the cell mounting device are provided with mounting parts, and the cell mounting device is provided with at least one mounting position hole; and the at least one magnetic steel cell is mounted in the mounting position hole, the cross section of the magnetic steel cell is a trapezoid with a small upper part and a large lower part, and the two sides of the cross section of the magnetic steel cell are bonded with the mounting position hole. The magnetic steel cell elements are borne through the mounting position holes in the cell element mounting device, and the technical problem that a magnetic steel mounting structure is lacked in the prior art is solved.

Description

Technical fields:

[0001] This invention relates to the field of traditional bearing technology, and in particular to a four-cell device for a permanent magnet thrust bearing. Background technology:

[0002] Bearings are used in almost all industrial sectors. Bearing manufacturing is a large-scale market for high-end equipment components in my country. As an indispensable core component in most equipment, bearings mainly support rotating shafts and transmit torque, force, and displacement.

[0003] Traditional bearings suffer from drawbacks such as high frictional loss and limited lifespan under special operating conditions such as high speed, high vacuum, and strong magnetic fields, making it difficult to meet the industrial demand for high-performance and high-reliability bearings, especially when there is a relatively large axial displacement. For example, single-row tapered roller bearings, with their linear roller contact surface being superior to point contact surfaces, offer significant advantages in load-bearing capacity, but they also suffer from disadvantages such as difficult installation and cumbersome manufacturing processes.

[0004] As a new type of bearing, permanent magnet thrust bearings utilize the magnetic force generated by permanent magnet materials to achieve contactless support for rotating shafts. They have outstanding advantages such as no friction, no wear, long service life, and cleanliness and environmental friendliness. At the same time, they can achieve non-contact transmission, have good vibration reduction and noise reduction effects, and can achieve large axial displacement.

[0005] There is an urgent need for a permanent magnet thrust bearing quadcell device, which would help solve the technical problem of the lack of a magnet mounting structure in the existing technology. Summary of the Invention:

[0006] In one embodiment, the present invention provides a permanent magnet thrust bearing four-cell device, which supports the magnet cell through the mounting holes on the cell mounting device, thereby helping to solve the technical problem of the lack of a magnet mounting structure in the prior art.

[0007] The permanent magnet thrust bearing quadcell device includes:

[0008] The cell mounting device has mounting portions on both sides, and the cell mounting device has at least one mounting hole;

[0009] At least one magnetic steel cell is installed in the mounting hole. The cross-section of the magnetic steel cell is a trapezoid with a smaller top and a larger bottom. The two sides of the cross-section of the magnetic steel cell are bonded to the mounting hole.

[0010] In one embodiment, there are four mounting holes, which are arranged in a matrix of two rows and two columns.

[0011] In one embodiment, the mounting part is a mounting ear extending to both sides, and the mounting ear is provided with a plurality of mounting holes along the length direction, through which it is bolted to an external structure.

[0012] In one embodiment, an adjustment pad is provided between the mounting ear and the external structure.

[0013] In one embodiment, the cell mounting device has elastic safety devices at both ends.

[0014] In one embodiment, the cross-section of the cell mounting device is an arc segment.

[0015] In one embodiment, the magnet cell protrudes from the outer end face of the cell mounting device.

[0016] In one embodiment, the external structure is a ring structure, and the cell mounting device is a concentric arc segment.

[0017] In one embodiment, the permanent magnet thrust bearing quadcell device has multiple external structures with different radii, and the multiple layers of the external structures are coaxially connected.

[0018] In one embodiment, the permanent magnet thrust bearing quadcell device can be arranged axially. Attached image description:

[0019] Figure 1 This is an axonometric view of a four-cell device in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the magnet structure in another embodiment of the present invention;

[0021] Figure 3 This is a front view of a four-cell device according to another embodiment of the present invention;

[0022] Figure 4 This is a top view of a four-cell device according to another embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the assembly relationship of the four-cell device in another embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the radial serialization of the four-cell device in another embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the axial serialization of the four-cell device in another embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the first working state of the application structure of the quadcell device in another embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the second working state of the application structure of the quadcell device in another embodiment of the present invention.

[0028] Figure Labels

[0029] Cellular Installation Device 1

[0030] Installation Department 11

[0031] Mounting hole 12

[0032] Mounting hole 13

[0033] Magnet cell 2

[0034] Flexible safety device 3

[0035] Adjustment pad 4

[0036] External structure 10 Detailed implementation method:

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0039] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0040] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0041] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0042] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0043] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0046] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0047] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0048] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0049] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0050] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0051] Figure 1 This is an axonometric view of a four-cell device in one embodiment of the present invention; Figure 2 This is a schematic diagram of the magnet structure in another embodiment of the present invention; Figure 3 This is a front view of a four-cell device according to another embodiment of the present invention; Figure 4 This is a top view of a four-cell device according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the assembly relationship of the four-cell device in another embodiment of the present invention; Figure 6 This is a schematic diagram of the radial serialization of the four-cell device in another embodiment of the present invention; Figure 7 This is a schematic diagram of the axial serialization of the four-cell device in another embodiment of the present invention. Figure 8 This is a schematic diagram of the first working state of the application structure of the quadcell device in another embodiment of the present invention; Figure 9 Schematic diagram of the second working state of the application structure of the four-cell device in another embodiment of the present invention.

[0052] As Figures 1 to 7 shown, in one embodiment, the present invention provides a four-cell device for a permanent magnet thrust bearing. The four-cell device for the permanent magnet thrust bearing includes a cell mounting device 1 and at least one magnet cell 2;

[0053] Both sides of the cell mounting device 1 have mounting parts 11, and the cell mounting device 1 has at least one mounting hole 12;

[0054] At least one magnet cell 2 is installed in the mounting hole 12. The cross-section of the magnet cell 2 is a trapezoid with a smaller upper part and a larger lower part, and both sides of the cross-section of the magnet cell 2 are bonded to the mounting hole 12.

[0055] An integral structure is formed between the magnet cell 1 and the cell mounting device through bonding to meet the requirement of stable fixation.

[0056] To make the magnet cell fit the circular ring shape of the mounting device, ensure the required bonding force, increase the magnet area, improve the magnetic thrust per unit volume, the magnet cell 1 is made trapezoidal, that is, the lower end of the magnet cell 1 is slightly smaller than the upper end, and the cross-section is trapezoidal. Using a trapezoidal magnet can generate a downward pressure, making the bonding between the magnet cell 1 and the cell mounting device 2 more stable.

[0057] [[ID= / / span]]In one embodiment, there are four mounting holes 12, and the mounting holes 12 are arranged in a two-row and two-column matrix.

[0058] Using four magnets as cell elements to form an organic structure, the mounting device is honeycomb-shaped, and the overall presents a "field" character structure. The internal "cross" structure not only plays a role in isolation and fixation, but also can further increase the magnet area, improve the magnetic thrust per unit volume, and reduce the internal energy consumption of the same cell. The surrounding "square" structure also has the above-mentioned functions of partition and magnetic insulation, and can reduce the energy consumption between cells, and can achieve axial expansion.

[0059] In one embodiment, the mounting part 11 is a mounting ear extending to both sides, and a plurality of mounting holes 13 are arranged along the length direction on the mounting ear, and are bolted to the external structure 10 through the mounting holes 13.

[0060] Bolting holes are provided on the cell mounting device 2 for installing the elastic safety device 3. The connection between the cell mounting device 2 and the magnet cell 1 is realized through bolts. A rubber ring is used to play a buffering role, and a small gap is reserved as a margin. Except for the part connected to the nut, the screw can be a smooth rod. The screw and the fastening nut are bonded to each joint surface, and between the screw part and the holes of the magnet and the magnet mounting device, and there should be no gap.

[0061] In one embodiment, an adjustment pad 4 is provided between the mounting ear and the external structure 10.

[0062] The adjustment pad 4 is located below the ears on both sides of the cell mounting device 2, and mainly serves to adjust the positioning.

[0063] In one embodiment, the cell mounting device has elastic safety devices 3 at both ends.

[0064] The flexible safety device 3 is installed on the cell mounting device 2 to ensure the overall safety and reliability of the device.

[0065] In one embodiment, the cross-section of the cell mounting device 1 is an arc segment.

[0066] In one embodiment, the magnetic cell 2 protrudes from the outer end face of the cell mounting device 1.

[0067] The height of the magnet cell 1 is H. Since the cell mounting device 2 is annular, the magnet cell 1 has a protruding part. To ensure that the protruding part of the magnet cell 1 does not exceed a certain small distance after installation, the inner and outer rings of the cell mounting device 2 are slightly smaller than the height of the magnet cell 1. Since the magnet cell 1 is a trapezoidal magnet, the bonding surfaces (Sp1, Sp2) of the magnet cell 1 and the bonding surfaces (Sa1, Sa2) of the cell mounting device 2 cooperate with each other to bond, ensuring the required bonding force.

[0068] In one embodiment, the external structure 10 is a ring structure, and the cell mounting device 1 is a concentric arc segment.

[0069] In one embodiment, the permanent magnet thrust bearing quadcell device 1 has multiple external structures with different radii, and the multiple layers of the external structures are coaxially connected.

[0070] Adjustment pads are installed below the ears on both sides of the cell mounting device 2. This not only serves as a positioning adjustment but also makes the overall force on the mounting device more even.

[0071] This device can be serialized. When the inner and outer radii of the installed magnetic yoke are R0-H / 2 to R0+H / 2 mm, the radial center radius of this mounting device is R0, enabling the use of the same magnetic steel cell 1 and its cell mounting device 2 within the range of R0-(1.5H+δ) to R0+(1.5H+δ) mm. The radial center radii of the magnetic steel cell 1 and its cell mounting device 2 are serialized as R0+(H+δ), R0+2(H+δ), R0+3(H+δ), ..., and the corresponding inner and outer diameters of the magnetic steel cell mounting device 2 are R0-H / 2+1 and R0+H / 2-1, respectively, while other design aspects of the cell mounting device 2 remain unchanged.

[0072] In summary, this pseudo-honeycomb non-contact permanent magnet thrust bearing quad-cell device forms a honeycomb-like overall structure through the organic combination of the magnet cell 1 and the cell mounting device 2, achieving a series of requirements such as stable fixation, safety and reliability, reduced energy consumption, and reduced costs.

[0073] In one embodiment, the permanent magnet thrust bearing quadcell device can be arranged axially.

[0074] The effects of the invention:

[0075] This invention employs trapezoidal magnet cells, with the magnets and the inclined surfaces of the cell mounting device bonding together to ensure sufficient adhesion and achieve a stable and secure fixation. Simultaneously, the honeycomb-like integrated structure formed by the organic combination of the magnet cells and the mounting device provides isolation and fixation, while also increasing the magnet area, reducing energy consumption, and enhancing the magnetic thrust per unit volume. Elastic safety devices and adjusting pads facilitate positioning and adjustment, providing cushioning, vibration reduction, impact protection, and anti-loosening safety protection. The scalable open modular design enables device serialization, making magnetization more precise and facilitating radial magnetization. This results in easier process implementation and more stable and reliable performance.

[0076] A pseudo-honeycomb permanent magnet thrust bearing quadcell device, such as Figure 1 As shown, it includes a magnetic steel cell 1, a cell mounting device 2, an elastic safety device 3, and an adjusting pad 4. The magnetic steel cell 1 and the cell mounting device are bonded together to form an integral structure, meeting the requirements for stable fixation. The elastic safety device 3 is installed on the cell mounting device 2 to ensure the overall safety and reliability of the device. The adjusting pad 4 is located below the ears on both sides of the cell mounting device 2, mainly for adjustment and positioning.

[0077] Magnet cell 1 is a trapezoidal magnet, such as Figure 2 As shown. To ensure the magnet cell fits the circular shape of the mounting device, guarantee the required bonding force, increase the magnet area, and improve the magnetic thrust per unit volume, the magnet cell 1 is trapezoidal, meaning the lower end of magnet cell 1 is slightly smaller than the upper end, and its cross-section is trapezoidal. Using a trapezoidal magnet generates downward pressure, making the bond between magnet cell 1 and the mounting device 2 more stable. Example: The height H of magnet cell 1 is 30 mm. Using a trapezoidal magnet to generate downward pressure, the upper end of magnet cell 1 is 28 mm, so the lower end is 0.5 mm smaller than the upper end, with a lower end length of 27.5 mm.

[0078] The main view of the device is as follows Figure 3As shown in the figure, the height of the magnetic steel cell 1 is H. Since the cell installation device 2 is in a circular ring shape, there are protruding parts on the magnetic steel cell 1. To ensure that the protruding part does not exceed a certain small distance after the magnetic steel cell 1 is installed, the inner and outer rings of the cell installation device 2 are slightly smaller than the height of the magnetic steel cell 1. Since the magnetic steel cell 1 is a trapezoidal magnetic steel, the bonding surfaces (Sp1, Sp2) of the magnetic steel cell 1 and the bonding surfaces (Sa1, Sa2) of the cell installation device 2 cooperate with each other for bonding to ensure the required bonding force. Example: The height of the magnetic steel cell 1 is 30 mm. Since the cell installation device 2 is in a circular ring shape, there are protruding parts on the magnetic steel cell 1. To ensure that the protruding part does not exceed 0.2 mm after the magnetic steel cell 1 is installed, the inner and outer rings of the cell installation device 2 are each reduced by 1 mm compared to the magnetic steel height, that is, the height of the cell installation device 2 is 28 mm.

[0079] The top view of the device is as Figure 4 shown. Using four magnetic steels as cell elements to form an organic structure, the installation device is in a honeycomb shape, presenting a "field" character structure as a whole. The internal "cross" structure not only plays a role in isolation and fixation, but also can further increase the magnetic steel area, improve the magnetic thrust magnitude per unit volume, and reduce the internal energy consumption within the same cell. The "square" structure around also has the above functions of partition and magnetic insulation, and can reduce the energy consumption between cells, and can achieve axial expansion.

[0080] The cell installation device 2 is provided with bolt holes for setting the elastic safety device 3. The connection between the cell installation device 2 and the magnetic steel cell 1 is realized through bolts. A rubber ring is used to play a buffering role, and a small gap is reserved as a margin. Except for the part connected to the nut, the screw can be a smooth rod. The screw and the fastening nut are bonded to each connection surface, and the screw part is bonded to the holes of the magnetic steel and the magnetic steel installation device, without any gap.

[0081] The schematic diagram of the assembly relationship of the four-cell device is as Figure 5 shown. Adjusting pads are arranged under the two ears on both sides of the cell installation device 2, which can not only play a role in positioning and adjustment, but also make the overall force of the installation device more uniform. The adjusting pads can be made of various materials. In this implementation plan, copper pads are adopted.

[0082] As Figure 6 and Figure 7As shown, this device can be serialized. When the inner and outer radii of the installed magnetic yoke are R0-H / 2 to R0+H / 2 mm, the radial center radius of this mounting device is R0, enabling the use of the same magnetic steel cell 1 and its cell mounting device 2 within the range of R0-(1.5H+δ) to R0+(1.5H+δ) mm. The radial center radii of the magnetic steel cell 1 and its cell mounting device 2 are serialized as R0+(H+δ), R0+2(H+δ), R0+3(H+δ), ..., and the corresponding inner and outer diameters of the cell mounting device 2 are R0-H / 2+1 and R0+H / 2-1, respectively, while other designs of the cell mounting device 2 remain unchanged. Example: When the height H of the magnetic steel cell 1 is 30 mm, the inner and outer radii of the installed magnetic yoke are R0-15 and R0+15 mm, respectively, allowing the use of the same magnetic steel cell 1 and its cell mounting device 2 within the range of (R0-47) to (R0+47) mm.

[0083] exist Figure 8 and Figure 9 The present invention provides an application structure for a permanent magnet thrust bearing quadruple device. The left side is the rotor end, which is fitted onto the rotor shaft in the middle. The permanent magnet thrust bearing quadruple devices are arranged to form a layer structure, i.e., an isolation layer. There are gaps between the isolation layers. An isolation layer is also arranged on the right side. The right side is the stator layer, which does not produce axial rotation after being fixed to the fixed structure, i.e., the stator end. Figure 9 In the process, after the stator end and rotor end isolation layers are cross-stacked, the permanent magnet thrust bearing quad-cell devices between the upper and lower ends are aligned. At this time, the repulsive and attractive forces between them are balanced in the axial direction. When the rotor shaft moves axially, the balance is broken. Due to the presence of the magnetic field of the permanent magnet thrust bearing quad-cell device, the stator end and rotor end have a tendency to reset their original spatial positions, ultimately achieving the purpose of balancing the axial displacement of the rotor shaft.

[0084] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A permanent magnet thrust bearing quadcell device, characterized in that, The permanent magnet thrust bearing quadcell device includes: A cell mounting device (1) has mounting portions (11) on both sides, and the cell mounting device (1) has at least one mounting hole (12); At least one magnetic steel cell (2) is installed in the mounting hole (12). The cross-section of the magnetic steel cell (2) is a trapezoid with a smaller top and a larger bottom. The two sides of the cross-section of the magnetic steel cell (2) are bonded to the mounting hole (12).

2. The permanent magnet thrust bearing quadcell device according to claim 1, characterized in that, There are four mounting holes (12), which are arranged in a matrix of two rows and two columns.

3. The permanent magnet thrust bearing quadcell device according to claim 2, characterized in that, The mounting part (11) is a mounting ear that extends to both sides. The mounting ear is provided with a plurality of mounting holes (13) along the length direction, and is bolted to the external structure (10) through the mounting holes (13).

4. The permanent magnet thrust bearing quadcell device according to claim 3, characterized in that, An adjustment pad (4) is provided between the mounting ear and the external structure (10).

5. The permanent magnet thrust bearing quadcell device according to claim 4, characterized in that, The cell mounting device has elastic safety devices (3) at both ends.

6. The permanent magnet thrust bearing quadcell device according to claim 5, characterized in that, The cross-section of the cell mounting device (1) is an arc segment.

7. The permanent magnet thrust bearing quadcell device according to claim 6, characterized in that, The magnetic cell (2) protrudes from the outer end face of the cell mounting device (1).

8. The permanent magnet thrust bearing quadcell device according to claim 7, characterized in that, The external structure (10) is a ring structure, and the cell mounting device (1) is a concentric arc segment.

9. The permanent magnet thrust bearing quadcell device according to claim 8, characterized in that, The permanent magnet thrust bearing quad-cell device (1) has multiple external structures with different radii, and the multiple layers of the external structures are coaxially connected.

10. The permanent magnet thrust bearing quadcell device according to claim 9, characterized in that, The permanent magnet thrust bearing quadcell device can be arranged along the axial direction.

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