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Electromagnetic Suspension Hub Bearing Unit

A hub bearing and electromagnetic levitation technology, applied in the direction of bearing components, bearings, shafts and bearings, can solve problems such as insufficient bearing clearance control, and achieve the effect of improving safety performance

Active Publication Date: 2019-10-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an electromagnetic suspension hub bearing unit and its control method for the deficiencies in the structural design of the existing hub bearing unit and the problem of bearing clearance control

Method used

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  • Electromagnetic Suspension Hub Bearing Unit
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  • Electromagnetic Suspension Hub Bearing Unit

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0027] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0028] Such as figure 1 As shown, the present invention discloses an electromagnetic levitation hub bearing unit, including an inner ring, an outer ring, a connecting shaft, an electromagnetic coil, a first laser ranging sensor and a second laser ranging sensor;

[0029] The inner ring includes a left ring and a right ring, both of which are ring-shaped;

[0030] Both the left ring and the right ring are fixed on the connecting shaft;

[0031] An annular first protrusion and a secon...

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Abstract

The invention discloses an electromagnetic suspension hub bearing unit which comprises an inner ring, an outer ring, a connecting shaft, an electromagnetic coil and two laser ranging sensors, whereina left ring and a right ring are fixed to the connecting shaft, and an annular cavity with the convex annular section is formed between the left ring and the right ring; the electromagnetic coil is wound on the inner ring; the outer ring comprises a balancing part and a connecting part, the outer ring is in a T shape, the balancing part is arranged in the annular cavity, the inner wall of the connecting part is fixedly connected to the outer wall of the balancing part, and the outer wall of the connecting part stretches out of the annular cavity; and the two laser ranging sensors are arrangedon the balancing part to measure the gap between the balancing part of the outer ring and the inner ring. The electromagnetic suspension hub bearing unit disclosed by the invention overcomes frictiongenerated during rotation by means of an electromagnetic suspension technology, detects the gap and adjusts the suspension force. A ball is replaced by electromagnetic suspension, so that the axial and radial friction of the bearing is reduced greatly, and the bearing is steadier in the operating process.

Description

technical field [0001] The invention relates to the technical field of mechanical bearings, in particular to an electromagnetic suspension hub bearing unit. Background technique [0002] The existing electromagnetic suspension hub bearing units of various structures are mainly composed of a three-phase motor, two four-phase radial magnetic bearings, one two-phase axial magnetic bearing and a plurality of power conversion components. The common ones are mainly composed of magnetic + ball, magnetic + oil and other parts. These structures cannot solve the stiffness problem at low speeds, nor can they solve the vibration instability problem caused by the second-order inertial control strategy. [0003] The existing bearing monitoring technology mainly installs a noise sensor between the inner and outer rings, and judges by monitoring the noise level during the operation of the bearing. This detection method is outdated, inefficient, and affected greatly. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04F16C41/00
Inventor 邓玉鑫林棻赵又群
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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