A New Hybrid Magnetic Suspension Bearing

Abstract

The invention discloses a novel mixing magnetic bearing which comprises a rotating shaft, a permanent magnet radial bearing, an auxiliary adjusting device, a protecting spring and a protecting pin, wherein the permanent magnet radial bearing is utilized to supply a bias magnetic field for generating a larger radial suspension force; the auxiliary adjusting device comprises an axial electromagnet bearing, a compression spring, a rolling bearing, a rolling bearing sleeve, a bearing penetrating cover and an isolating check ring; when the system normally works, the auxiliary adjusting device has the function of adjusting the radial position of a rotor; and when the power of the system is accidentally cut off, the auxiliary adjusting device has the function of auxiliary supporting. The novel mixing magnetic bearing has the advantages that the supporting performance and control reliability of the magnetic bearing are increased, the falling abrasion is reduced, the service life of the auxiliary bearing is prolonged, the magnetic bearing is compact in structure, the utility rate of space is increased and the cost is lowered.

Description

technical field

[0001] The invention relates to a novel hybrid magnetic suspension bearing. It belongs to the research field of electromagnetic automation equipment. Background technique

[0002] Magnetic suspension bearing is a non-contact bearing that uses magnetic force to suspend the rotor. Compared with ordinary bearings, it has the advantages of no friction, no lubrication, high rotor displacement accuracy, high supporting speed, long life, and controllable rotation performance. The magnetic bearing protection bearing is also called auxiliary bearing or safety bearing. It is a temporary support to avoid direct contact between the rotating shaft and the electromagnetic bearing in case of external shock, increased vibration, and electromagnetic bearing failure, so as to protect the electromagnetic bearing and the rotor. Protective effects. At present, rolling bearings with fixed clearances are mostly used to protect bearings. The use of auxiliary bearings with backlas...

Examples

Embodiment Construction

[0015] Below in conjunction with accompanying drawing, patent of the present invention is described further.

[0016] Such as figure 1 As shown, a new hybrid magnetic suspension bearing includes a rotating shaft 1, a bearing cover 2, a thrust plate 3, a compression spring 4, a stator coil 5, an axial stator 6, a rolling bearing 7, a bearing bush 8, a safety pin 9, and a safety spring 10 , Isolation retaining ring 11, permanent magnet rotor 12, copper ring 13, permanent magnet stator 14. The permanent magnet rotor 12, the copper ring 13, and the permanent magnet stator 14 form a radial permanent magnet bearing; the bearing cover 2, the thrust disc 3, the compression spring 4, the stator coil 5, the axial stator 6, the rolling bearing 7, the bearing The bushing 8, the safety pin 9, the safety spring 10, and the isolation retaining ring 11 form an auxiliary adjustment device; the rotating shaft 1 is suspended and supported by two radial permanent magnetic bearings, and an auxili...

technical field

[0001] The invention relates to a novel hybrid magnetic suspension bearing. It belongs to the research field of electromagnetic automation equipment. Background technique

[0002] Magnetic suspension bearing is a non-contact bearing that uses magnetic force to suspend the rotor. Compared with ordinary bearings, it has the advantages of no friction, no lubrication, high rotor displacement accuracy, high supporting speed, long life, and controllable rotation performance. The magnetic bearing protection bearing is also called auxiliary bearing or safety bearing. It is a temporary support to avoid direct contact between the rotating shaft and the electromagnetic bearing in case of external shock, increased vibration, and electromagnetic bearing failure, so as to protect the electromagnetic bearing and the rotor. Protective effects. At present, rolling bearings with fixed clearances are mostly used to protect bearings. The use of auxiliary bearings with backlas...

Examples

Embodiment Construction

[0015] Below in conjunction with accompanying drawing, patent of the present invention is described further.

[0016] Such as figure 1 As shown, a new hybrid magnetic suspension bearing includes a rotating shaft 1, a bearing cover 2, a thrust plate 3, a compression spring 4, a stator coil 5, an axial stator 6, a rolling bearing 7, a bearing bush 8, a safety pin 9, and a safety spring 10 , Isolation retaining ring 11, permanent magnet rotor 12, copper ring 13, permanent magnet stator 14. The permanent magnet rotor 12, the copper ring 13, and the permanent magnet stator 14 form a radial permanent magnet bearing; the bearing cover 2, the thrust disc 3, the compression spring 4, the stator coil 5, the axial stator 6, the rolling bearing 7, the bearing The bushing 8, the safety pin 9, the safety spring 10, and the isolation retaining ring 11 form an auxiliary adjustment device; the rotating shaft 1 is suspended and supported by two radial permanent magnetic bearings, and an auxili...

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