High-integration magnetic liquid double-suspension bearing

Abstract

The invention provides a high-integration magnetic liquid double-suspension bearing, and belongs to the technical field of high-speed rotating bearings. The device comprises a driving unit, a supporting base, a first radial bearing unit, a second radial bearing unit and a rotating shaft, the first radial bearing unit, the second radial bearing unit and the driving unit are sequentially arranged on the rotating shaft in a sleeving manner; the first radial bearing unit, the second radial bearing unit and the driving unit are all connected with a supporting base arranged below the rotating shaft; and the driving unit comprises a first power coupling, a torque velocimeter, a second power coupling, a driving motor and a motor damping strip. By the adoption of the mirror symmetry bearing unit, multi-layer sealing and damping closed-loop control, the integration level and rotation precision are improved, and the stability and safety of high-speed operation are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bearing design, and specifically to a highly integrated magnetic fluid dual suspension bearing. Background Technology

[0002] In high-speed rotating machinery, bearings are critical components ensuring stable operation. Traditional magnetic levitation bearings rely on electromagnetic force for non-contact support, significantly reducing friction and wear. However, they are highly susceptible to instability or even shutdown under conditions of power outages or strong electromagnetic interference, resulting in insufficient reliability. On the other hand, while hydraulic levitation bearings offer high load-bearing capacity, they suffer from issues such as oil leakage, high energy consumption, and slow response, often leading to maintenance difficulties and environmental pollution during long-term operation. Existing single levitation methods are insufficient to simultaneously meet the demands of high-speed, heavy-load, and high-precision operation.

[0003] Furthermore, most common dual-suspension systems currently employ a split-type arrangement, resulting in a large overall axial dimension, low integration, and high assembly complexity. This structure not only increases the number of external oil circuit interfaces but also introduces redundant sealing interfaces, thereby increasing the risk of leakage and potential malfunctions. In terms of oil circuit design, most systems use a single pump source to supply pressure to multiple chambers, easily leading to poor pressure uniformity, which in turn affects the stability and rotational accuracy of the bearings. Simultaneously, the scattered sensor placement easily creates blind spots in condition monitoring, making it impossible to achieve comprehensive control over critical operating conditions. A more prominent problem is the lack of adaptive compensation design at the assembly interface between the shaft and the magnetic sleeve, which easily leads to eccentric wear and decreased accuracy during actual operation, thus affecting service life and operational safety.

[0004] Therefore, there is an urgent need for a new type of bearing structure that is highly integrated, has adaptive adjustment capabilities, and can take into account the advantages of magnetic levitation and hydraulic support. Summary of the Invention

[0005] To address the shortcomings of the prior art, the present invention aims to provide a highly integrated magnetic fluid dual suspension bearing, which employs a mirror-symmetric bearing unit, multi-layer sealing, and shock-absorbing closed-loop control to improve integration and rotational accuracy, ensuring stability and safety during high-speed operation. Simultaneously, the design of multiple insertion plunger pumps enables built-in oil outlet, return, and unloading circulation, reducing external piping, improving pressure balance, lowering leakage risk, and facilitating maintenance.

[0006] Specifically, the present invention provides a highly integrated magnetic fluid dual suspension bearing, which includes a drive unit, a support base, a first radial bearing unit, a second radial bearing unit, and a rotating shaft; The first radial bearing unit, the second radial bearing unit, and the drive unit are sequentially mounted on the rotating shaft; and the first radial bearing unit, the second radial bearing unit, and the drive unit are all connected to the support base located below the rotating shaft. The drive unit includes a first power coupling, a torque meter, a second power coupling, a drive motor, and a motor damping strip. The bottom of the drive motor is connected to the support base through the motor damping strip. The output end of the drive motor is connected to the second end of the torque meter through the first power coupling. The first end of the torque meter is connected to one end of the rotating shaft through the second power coupling, so that the drive motor can drive the rotating shaft to rotate. The first radial bearing unit includes a first end cover, a second end cover, a first radial stator, a first sealing cover, a second sealing cover, a first magnetic sleeve, a first coil assembly, a first stator plug, and a second end cover plug. The two ends of the first radial stator are fixedly connected to the first end cover and the second end cover respectively to form a radial bearing cavity. The first end cover is connected to the first magnetic sleeve via the first sealing cover, and the second end cover is connected to the magnetic sleeve via the second sealing cover. The first magnetic sleeve and the first coil assembly are disposed inside the first radial stator. The first magnetic sleeve is fixedly connected to the rotating shaft via a first magnetic sleeve fixing member, and one end of the first magnetic sleeve contacts the first shoulder of the rotating shaft. The first coil assembly is wound around the side wall of the stator column of the first radial stator. The second end cover is provided with a first plunger pump assembly, a first pressure sensor assembly, a first eddy current sensor assembly, and a first temperature sensor assembly. The first plunger... The input end of the pump set is connected to the interior of the radial bearing cavity. The output end of the first plunger pump set is located on the side wall of the second end cover, and the output end of the first plunger pump set is provided with a second end cover plug. The first plunger pump set is equipped with a first plunger pump drive motor set. The output end of the first plunger pump drive motor set is connected to the first plunger pump set through a first plunger pump coupling set, so that the first plunger pump drive motor set can drive the hydraulic oil to move in the radial bearing cavity. The receiving end of the first pressure sensor set passes through the second end cover and is located at the connection between the second end cover and the first radial stator. The first eddy current sensor set is connected to the second end cover through a rib, and the receiving end of the first eddy current sensor set contacts the side wall of the shaft to monitor the rotation accuracy of the shaft in real time. The receiving end of the first temperature sensor set passes through the second end cover and is connected to the interior of the radial bearing cavity.

[0007] Preferably, the first radial bearing unit and the second radial bearing unit have the same structure and are mirror images of each other, and the magnetic sleeves of the first radial bearing unit and the second radial bearing unit are respectively connected to the rotating shaft through magnetic sleeve fixing parts.

[0008] Preferably, the second end cover is further provided with a plunger pump suction port, a plunger pump discharge port, a drain port, a pressure sensing port, an axial outlet port, and a temperature sensing port. The output end of the first plunger pump group is connected to the plunger pump suction port, and the output end of the first plunger pump group is connected to the plunger pump discharge port. The receiving end of the first pressure sensor group passes through the pressure sensing port and the axial outlet port, and the receiving end of the first temperature sensor group passes through the temperature sensing port. Inlet and outlet ports are provided on the side wall of the first radial stator.

[0009] Preferably, the rotating shaft is fitted with a first sealing frame and a second sealing frame. The first sealing frame is located inside the first end cover and is in contact with the first sealing cover; the second sealing frame is located inside the second end cover and is in contact with the second sealing cover.

[0010] Preferably, a first sealing ring is provided at the connection between the first end cover and the first radial stator, a second sealing ring is provided at the connection between the second end cover and the first radial stator, a third sealing ring is provided at the oil inlet, oil outlet, drain port, axial oil outlet and temperature sensing oil port of the plunger pump, and a fourth sealing ring is provided at the connection between the first plunger pump assembly and the second end cover.

[0011] Preferably, the first radial stator has multiple stator columns inside, and a radial flow channel penetrating the stator columns is opened on the first radial stator. A first stator plug is provided at the first end of the radial channel. A radial oil inlet is opened on the side wall of the first radial stator. The radial oil inlet is connected to the radial flow channel. Adjacent radial flow channels share a radial oil inlet. The radial oil inlet is connected to the output end of the first plunger pump through the plunger pump outlet. The oil outlet of the first plunger pump is connected to the radial oil inlet. A radial oil outlet is provided at the second end of the radial channel.

[0012] Preferably, a drive motor bell-shaped cover is provided on the outer side of the output end of the drive motor; and a first plunger pump bell-shaped cover assembly is provided on the outer side of the output end of the first plunger pump drive motor assembly.

[0013] Preferably, the support base includes a first radial stator support, a second stator support, and a base. The first radial stator support and the second stator support are respectively sleeved on the circumferential surfaces of the first radial stator and the second stator by threaded connection, and the bottoms of the first radial stator support and the second stator support are respectively fixedly connected to the base.

[0014] Preferably, multiple first plunger pump assemblies are evenly distributed along the circumference in the insertion slots of the second end cover, and multiple adjacent insertion slots are connected by ribs, with the first eddy current sensor assembly mounted on the ribs.

[0015] Preferably, hydraulic oil is first injected into and fills the entire radial bearing cavity through the inlet and outlet ports of the radial stator. The hydraulic oil in the radial bearing cavity is then driven by the first plunger pump drive motor to be drawn in from the input end of the first plunger pump set. After being pressurized by the first plunger pump set, it is discharged from the output end of the first plunger pump set. The discharged hydraulic oil is divided into two paths: the first path flows to the pressure sensing oil port, and the second path enters the radial oil inlet. The hydraulic oil entering the radial oil inlet flows to the two radial oil outlets respectively, and is finally discharged through the radial oil outlets and acts on the magnetic sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs a mirror-symmetrical radial bearing unit, combined with a multi-layered sealing redundancy design and a rigid fixing method for the stator support. This ensures structural strength while shortening the axial dimension and improving the overall system integration. Through a flexible, vibration-damping connection between the drive unit and the base, and closed-loop control via a torque tachometer, low vibration and high-precision rotation are achieved at high speeds. Compared to traditional split-type double-suspension structures, this design effectively reduces assembly complexity, avoids leakage risks at redundant interfaces, and is more sensitive in dynamic response. It meets the comprehensive requirements of high-end equipment for high speed, low energy consumption, and high stability, demonstrating significant engineering application value.

[0017] To address the problems of traditional oil circuits that rely on a single pump source, have complex external piping, and pose a high risk of leakage, this invention incorporates a first plunger pump unit on the radial stator, enabling internal circulation for oil delivery, return, and unloading. This eliminates the need for numerous external oil pipe interfaces, significantly reducing the risk of leakage and environmental pollution. Simultaneously, multiple oil chambers achieve balanced pressure distribution through an internal flow channel and oblique orifice design, overcoming the pressure instability inherent in existing technologies. The sensor module is integrated with the end cap, enabling real-time monitoring of pressure, temperature, and rotor position, eliminating blind spots. The overall integration of the oil circuit and monitoring system greatly simplifies maintenance and makes fault location more intuitive and rapid. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the highly integrated magnetic fluid dual suspension bearing of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the highly integrated magnetic fluid dual suspension bearing of the present invention; Figure 3 This is a schematic diagram of the main structure of the first radial bearing of the highly integrated magnetic fluid dual suspension bearing of the present invention; Figure 4 This is a cross-sectional view of the overall structure of the first radial bearing unit of the highly integrated magnetic fluid dual suspension bearing of the present invention; Figure 5 This is a cross-sectional view of the second end cap of the highly integrated magnetic fluid dual suspension bearing of the present invention; Figure 6 This is a schematic diagram of the internal flow channel of the first radial stator of the radial bearing unit of the highly integrated magnetic fluid dual suspension bearing of the present invention.

[0019] Key reference numerals: 1-Support base; 101-First radial stator support; 102-Second stator support; 103-Base; 2-Rotating shaft; 3-First radial bearing unit; 301-First end cap; 302-First end cap M12 screw; 303-Second end cap M12 screw; 304-First magnetic sleeve; 305-First magnetic sleeve fixing piece; 306-First radial stator; 307-First stator plug; 308-First cover M4 screw; 309- Second end cap; 310-First plunger pump assembly; 311-First plunger pump coupling assembly; 313-First radial stator support M12 screw; 314-First plunger pump bell housing assembly M4 screw; 315-First eddy current sensor assembly; 316-First temperature sensor assembly; 317-First combined seal; 318-First coil assembly; 319-First cover; 320-First sealing skeleton; 321-First sealing ring; 322-Second end cap plug 323-First pressure sensor group; 324-Third sealing ring; 325-Second sealing skeleton; 326-Second cover; 327-Fourth sealing ring; 328-Third sealing ring; 329-Second sealing ring; 330-First plunger pump drive motor group; 331-First plunger pump bell-shaped cover group; 4-Second radial bearing unit; 5-Drive assembly; 501-Second power coupling; 502-Torque tachometer; 503-Drive motor bell-shaped cover Cover; 504 - First power coupling; 505 - Drive motor; 506 - Motor damping strip M20 screw; 507 - Drive motor M14 screw; 508 - Motor damping strip; 509 - Torque meter M8 screw; 6 - Plunger pump suction port; 7 - Plunger pump discharge port; 8 - Drain port; 9 - Pressure sensor port; 10 - Axial outlet port; 11 - Radial inlet port; 12 - Radial outlet port; 13 - Temperature sensor port; 14 - Cable inlet / outlet port. Detailed Implementation

[0020] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0021] The highly integrated magnetic fluid dual suspension bearing device provided by this invention, such as Figure 1 and Figure 2 As shown, it includes a support base 1, a rotating shaft 2, a first radial bearing unit 3, a second radial bearing unit 4, and a drive assembly 5. The drive assembly 5, the first radial bearing unit 3, and the second radial bearing unit 4 are sequentially mounted on the rotating shaft 2. The drive assembly 5 is mounted on the support base 1. The second radial bearing unit 4 has the same structure as the first radial bearing unit 3. The first radial bearing unit 3 and the second radial bearing unit 4 are symmetrically arranged on the rotating shaft 2. The installation clearance between the rotor and the bearing is adjusted. A plunger pump set is used in conjunction with a motor to realize the oil outlet, oil return, and oil unloading inside the magnetic fluid double suspension bearing.

[0022] like Figure 2As shown, the power unit includes a second power coupling 501, a torque tachometer 502, a first power coupling 504, a drive motor bell-shaped cover 503, a drive motor 505, and a motor damping strip 508. The bottom of the drive motor 505 is connected to the motor damping strip 508 via an M20 screw 506, and the motor damping strip 508 is connected to the base 103 via an M14 screw 507. The extended shaft of the drive motor 505 is connected to the second end of the torque tachometer 502 via the first power coupling 504, and the first end of the torque tachometer 502 is connected to the second end of the rotating shaft 2 via the first power coupling 501, thereby causing the drive motor 505 to drive the rotating shaft 2 to rotate.

[0023] like Figure 2 , Figure 3 and Figure 4 As shown, the first radial bearing unit 3 includes a first end cap 301, a second end cap 309, a first sealing cap 319, a second sealing cap 326, a first magnetic sleeve fixing member 305, a first magnetic sleeve 304, a first radial stator 306, a first plunger pump assembly 310, a first plunger pump drive motor assembly 330, a first plunger pump coupling assembly 311, a first plunger pump bell housing assembly 331, a first coil assembly 318, a first pressure sensor assembly 323, a first eddy current sensor assembly 315, a first temperature sensor assembly 316, a first stator plug 307, a second end cap plug 322, a first end cap M12 screw 302, a second end cap M12 screw 303, a first sealing cap M4 screw 308, a first sealing ring 321, a second sealing ring 329, a third sealing ring 324, a first combined seal 317, a first sealing skeleton 320, and a second sealing skeleton 325.

[0024] The first magnetic sleeve 304 is connected to the rotating shaft 2 via the first magnetic sleeve fixing member 305. The first magnetic sleeve 304 is installed on one side of the rotating shaft 2, and the first end of the first magnetic sleeve 304 contacts the first shoulder of the rotating shaft 2. The first coil group 318 is disposed outside the first magnetic sleeve 304, and the first coil group 318 is fixedly wound with the stator column of the first radial stator 306. The first end of the first radial stator 306 is connected to the first end of the first end cover 301 via the first radial stator support M12 screw 313. The first cover 319 is connected to the first end cover 301. The second end is connected by the first cap M4 screw 308. The first radial stator 306 has eight radial flow channels inside, which pass through the center of the eight stator columns respectively. The circumferential surface of the first radial stator 306 has eight radial flow channels that pass through the stator columns perpendicularly. Four oil inlets are evenly placed on the second end face of the first radial stator 306, so that the eight stator columns are symmetrical to the four oil inlets in pairs. Each oil inlet has two oblique flow channels that pass through the two stator column flow channels. The four oil inlets are respectively matched with the oil outlet flow channels of the first plunger pump group 310 of the second end cap 309.

[0025] The second radial bearing unit 4 has the same structure as the first radial bearing unit 3, but is arranged symmetrically, and will not be described here.

[0026] like Figure 3 and Figure 4 As shown, the first radial bearing unit 3 includes four first plunger pump drive motor groups 330, a first plunger pump bell housing group 331, a first radial coupling 311, a first plunger pump group 310, a first pressure sensor group 323, a first temperature sensor group 316, a first eddy current sensor 315, a third sealing ring 328, and a second end cap screw plug 322; eight first stator screw plugs 307 and a first coil group 318, a second end cap M12 screw 303 and a fourth sealing ring 327; and sixteen first plunger pump bell housing group M4 screws 314.

[0027] like Figures 2-6 As shown, the first radial bearing unit 3 is equipped with an oil circuit structure. The connection point of the first plunger pump assembly 310 is provided with a plunger pump suction port 6, a plunger pump discharge port 7, a drain port 8, a pressure sensing port 9, an axial outlet port 10, and a temperature sensing port 13; a radial inlet port 11, a radial outlet port 12, and an inlet / outlet port 14. The oil circuit structure includes a first pipeline and a second pipeline. The first pipeline is as follows: oil enters from the plunger pump suction port 6, exits from the axial outlet port 10, and drains from the drain port 8. The second pipeline is as follows: oil enters from the radial inlet port 11 and exits from the radial outlet port 12, acting on the first magnetic sleeve 304. The first pressure sensor assembly 323 contacts the oil through the pressure sensing port 9 to detect the oil pressure inside the first radial stator 306, and the first temperature sensor assembly 316 contacts the oil through the temperature sensing port 13 to detect the oil temperature inside the first radial stator 306.

[0028] The working process of this device is as follows: Before the equipment is started, hydraulic oil is first injected into the radial bearing cavity through the inlet / outlet port 14 provided on the side wall of the radial stator 306, so that the hydraulic oil fills the radial bearing cavity inside the first radial bearing unit 3 and the second radial bearing unit 4. At this time, the hydraulic oil is effectively sealed in the bearing cavity by the multi-stage sealing structure (first sealing ring 321, second sealing ring 329, third sealing ring 324 and first combined seal 317) to prevent leakage.

[0029] After the equipment is started, the drive motor 505 is powered on and runs. Its output torque is transmitted to the rotating shaft 2 in sequence through the first power coupling 504, the torque tachometer 502, and the second power coupling 501, causing the rotating shaft 2 to start rotating. The drive motor 505 is flexibly connected to the support base 1 through the motor damping strip 508, which effectively reduces the transmission of vibration to the base during the acceleration of the rotating shaft.

[0030] At the same time, the first coil group 318 in the first radial bearing unit 3 and the second radial bearing unit 4 is energized, forming a radial electromagnetic force between the first radial stator 306 and the first magnetic sleeve 304, which generates a magnetic levitation support effect on the rotating shaft 2, so that the rotating shaft 2 obtains initial levitation positioning in the radial direction.

[0031] Simultaneously with the establishment of magnetic levitation, the first plunger pump drive motor assembly 330, located within the second end cover 309, starts, driving the first plunger pump assembly 310 via the first plunger pump coupling assembly 311. Hydraulic oil in the radial bearing cavity is drawn in through the plunger pump suction port 6, pressurized by the first plunger pump assembly 310, and discharged from the plunger pump discharge port 7. The discharged hydraulic oil flows in two separate paths: One flow passes through the pressure sensing port 9 and the axial outlet 10, and is used for system pressure monitoring and oil circulation. Another path enters the radial flow channel inside the first radial stator 306 through the radial inlet 11, and is sprayed out from the corresponding radial outlet 12, acting on the outer peripheral surface of the first magnetic sleeve 304, forming a stable hydraulic oil film between the magnetic sleeve 304 and the first radial stator 306.

[0032] Supported by the hydraulic oil film, the rotating shaft 2 achieves hydraulic suspension, forming a dual magnetic-hydraulic suspension state together with the magnetic suspension. Magnetic suspension is used for rapid response and precise positioning, while hydraulic suspension is used for load bearing and damping. The two work together to improve the stability and load-bearing capacity of the rotating shaft 2 under high-speed operating conditions.

[0033] During operation, the first pressure sensor group 323 detects the hydraulic oil pressure in the radial bearing cavity in real time, the first temperature sensor group 316 monitors the oil temperature change in real time, and the first eddy current sensor group 315 continuously detects the radial displacement and rotational accuracy of the rotating shaft 2. When the operating parameters change, the electromagnetic excitation of the first coil group 318 and the operating state of the first plunger pump drive motor group 330 can be adjusted to achieve coordinated adjustment of the magnetic levitation force and hydraulic support force, thereby ensuring that the rotating shaft 2 is always in a stable suspended state.

[0034] When the equipment stops, the drive motor 505 stops running, and the shaft 2 gradually decelerates; the first plunger pump drive motor 330 stops working, and the hydraulic oil flows back through the drain port 8, gradually releasing the system pressure. With the combined effect of the multi-stage sealing structure, the oil inside the bearing remains stable, preventing leakage or cavitation caused by shutdown.

[0035] Through the above-described process, this invention achieves efficient synergy between magnetic levitation and hydraulic levitation, significantly improving the operational stability and safety of bearings under high-speed and high-load conditions while ensuring high integration.

[0036] In summary, this invention integrates oil delivery, return, and unloading functions into the bearing cavity by setting up a plunger pump assembly, significantly reducing external oil circuit interfaces and effectively lowering the failure rate. Combined with magnetic-hydraulic dual-suspension collaborative control and modular pre-assembled structure, it achieves high-precision rotation under high-speed operating conditions, shortens maintenance time, and provides a high-stability, low-maintenance-cost rotary support solution for high-speed, high-load equipment.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A highly integrated magnetic fluid dual-suspension bearing, characterized in that: It includes a drive unit, a support base, a first radial bearing unit, a second radial bearing unit, and a rotating shaft; The first radial bearing unit, the second radial bearing unit, and the drive unit are sequentially mounted on the rotating shaft; and the first radial bearing unit, the second radial bearing unit, and the drive unit are all connected to the support base located below the rotating shaft. The drive unit includes a first power coupling, a torque meter, a second power coupling, a drive motor, and a motor damping strip. The bottom of the drive motor is connected to the support base through the motor damping strip. The output end of the drive motor is connected to the second end of the torque meter through the first power coupling. The first end of the torque meter is connected to one end of the rotating shaft through the second power coupling, so that the drive motor can drive the rotating shaft to rotate. The first radial bearing unit includes a first end cover, a second end cover, a first radial stator, a first sealing cover, a second sealing cover, a first magnetic sleeve, a first coil assembly, a first stator plug, and a second end cover plug. The two ends of the first radial stator are fixedly connected to the first end cover and the second end cover respectively to form a radial bearing cavity. The first end cover is connected to the first magnetic sleeve via the first sealing cover, and the second end cover is connected to the magnetic sleeve via the second sealing cover. The first magnetic sleeve and the first coil assembly are disposed inside the first radial stator. The first magnetic sleeve is fixedly connected to the rotating shaft via a first magnetic sleeve fixing member, and one end of the first magnetic sleeve contacts the first shoulder of the rotating shaft. The first coil assembly is wound around the side wall of the stator column of the first radial stator. The second end cover is provided with a first plunger pump assembly, a first pressure sensor assembly, a first eddy current sensor assembly, and a first temperature sensor assembly. The first plunger... The input end of the pump set is connected to the interior of the radial bearing cavity. The output end of the first plunger pump set is located on the side wall of the second end cover, and the output end of the first plunger pump set is provided with a second end cover plug. The first plunger pump set is equipped with a first plunger pump drive motor set. The output end of the first plunger pump drive motor set is connected to the first plunger pump set through a first plunger pump coupling set, so that the first plunger pump drive motor set can drive the hydraulic oil to move in the radial bearing cavity. The receiving end of the first pressure sensor set passes through the second end cover and is located at the connection between the second end cover and the first radial stator. The first eddy current sensor set is connected to the second end cover through a rib, and the receiving end of the first eddy current sensor set contacts the side wall of the shaft to monitor the rotation accuracy of the shaft in real time. The receiving end of the first temperature sensor set passes through the second end cover and is connected to the interior of the radial bearing cavity.

2. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: The first radial bearing unit and the second radial bearing unit have the same structure and are mirror images of each other. The magnetic sleeves of the first radial bearing unit and the second radial bearing unit are respectively connected to the rotating shaft through magnetic sleeve fixing parts.

3. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: The second end cover is also provided with a plunger pump suction port, a plunger pump discharge port, a drain port, a pressure sensing port, an axial outlet port, and a temperature sensing port. The output end of the first plunger pump group is connected to the plunger pump suction port, and the output end of the first plunger pump group is connected to the plunger pump discharge port. The receiving end of the first pressure sensor group passes through the pressure sensing port and the axial outlet port, and the receiving end of the first temperature sensor group passes through the temperature sensing port. Inlet and outlet ports are provided on the side wall of the first radial stator.

4. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: The rotating shaft is fitted with a first sealing frame and a second sealing frame. The first sealing frame is located inside the first end cover and is in contact with the first sealing cover; the second sealing frame is located inside the second end cover and is in contact with the second sealing cover.

5. The highly integrated magnetic fluid dual suspension bearing according to claim 3, characterized in that: A first sealing ring is provided at the connection between the first end cover and the first radial stator, a second sealing ring is provided at the connection between the second end cover and the first radial stator, a third sealing ring is provided at the oil inlet, oil outlet, drain port, axial oil outlet and temperature sensing oil port of the plunger pump, and a fourth sealing ring is provided at the connection between the first plunger pump assembly and the second end cover.

6. The highly integrated magnetic fluid dual suspension bearing according to claim 3, characterized in that: The first radial stator has multiple stator columns inside, and a radial flow channel penetrating the stator columns is opened on the first radial stator. A first stator plug is provided at the first end of the radial channel. A radial oil inlet is opened on the side wall of the first radial stator. The radial oil inlet is connected to the radial flow channel. Adjacent radial flow channels share a radial oil inlet. The radial oil inlet is connected to the output end of the first plunger pump through the plunger pump outlet. The oil outlet of the first plunger pump is connected to the radial oil inlet. A radial oil outlet is provided at the second end of the radial channel.

7. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: A bell-shaped cover for the drive motor is provided on the outside of the output end of the drive motor; a bell-shaped cover assembly for the first plunger pump is provided on the outside of the output end of the first plunger pump drive motor assembly.

8. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: The support base includes a first radial stator support, a second stator support, and a base. The first radial stator support and the second stator support are respectively sleeved on the circumferential surfaces of the first radial stator and the second stator by threaded connection, and the bottoms of the first radial stator support and the second stator support are respectively fixedly connected to the base.

9. The highly integrated magnetic fluid dual suspension bearing according to claim 1, characterized in that: Multiple first plunger pump assemblies are evenly distributed along the circumference in the insertion slots of the second end cover. The multiple adjacent insertion slots are connected by ribs, and the first eddy current sensor assembly is mounted on the ribs.

10. The highly integrated magnetic fluid dual suspension bearing according to claim 3, characterized in that: Hydraulic oil is first injected through the inlet and outlet ports of the radial stator and fills the entire radial bearing cavity. The hydraulic oil in the radial bearing cavity is then driven by the first plunger pump drive motor to be drawn in from the input end of the first plunger pump set. After being pressurized by the first plunger pump set, it is discharged from the output end of the first plunger pump set. The discharged hydraulic oil is divided into two paths: the first path flows to the pressure sensing oil port, and the second path enters the radial oil inlet. The hydraulic oil entering the radial oil inlet flows to the two radial oil outlets respectively, and is finally discharged through the radial oil outlets and acts on the magnetic sleeve.

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