CN201412450Y

CN201412450Y - Unbalance magnetic suspension bearing

Info

Publication number: CN201412450Y
Application number: CN 200920154334
Authority: CN
Inventors: 刘新广
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-21
Filing date: 2009-05-21
Publication date: 2010-02-24
Anticipated expiration: 2019-05-21

Abstract

An unbalance magnetic suspension bearing consists of a rotor and a stator. Particularly, an internal permanent magnetic ring is axially magnetized and fixedly sheathed on a rotating shaft sleeve to form a rotor; an external permanent magnetic ring that is axially magnetized is sheathed outside the internal permanent magnetic ring at intervals, one half of the magnetizing direction of the externalpermanent magnetic ring is reverse to the other half of the magnetizing direction and the external permanent magnetic ring is pieced by a whole ring or tile-shaped magnets; the excircle of the external permanent magnetic ring is fixedly sheathed with a ring, two end faces of the external permanent magnetic ring and the ring are respectively cemented with a circle, and a central hole of the circleis sheathed outside the rotating shaft sleeve of the rotor; and the external permanent magnetic ring, the ring and the circle form the stator of the unbalance magnetic bearing. The rotating shaft sleeve of the rotor is sheathed on a horizontal rotating shaft that needs to be borne by the rotating shaft sleeve so that the polar dividing diameter of the external permanent magnetic ring of the statoris along the horizontal direction, vertical to the axis of the rotating shaft and then fixed in an engine base or a rack. The stator generates upward or downward magnetic resultant force to the rotor, which can overcome the friction against the original bearing by the gravity of the extension part of the horizontal rotating shaft and a rotating wheel on the extension part.

Description

Non-equilibrium magnetic force suspension bearing

Technical field

The utility model relates to a kind of magnetic suspension bearing, particularly a kind of non-equilibrium magnetic force suspension bearing.

Background technique

Rotating shaft in the existing equipment usually all use classical mechanical bearing to support, and seldom uses up the full magnetic suspension bearing.Because permanent-magnet suspension bearing can not guarantee the centering requirement of rotating shaft, the load that can not withstand shocks or oscillating load; Electromagnetic type or electromagnet and permanent magnet combined suspending bearing structure complexity, just and need the complicated control system of configuration one cover can make the rotating shaft running reach satisfied precision and stability, unless specific (special) requirements generally need not.If in machine or the mechanism horizontal rotating shaft is arranged, and the end that this its mechanical bearing of rotating shaft Extension support one side is long is installed with moving runner (as blast fan, drive wheel, flywheel etc.), then this side mechanical bearing bears the one section axle stretching out this mechanical bearing and the downforce of moving runner gravity, and the mechanical bearing of the horizontal rotating shaft II the other end bears the last top power that subgravity produces.Show as Fig. 1, the rotating shaft II of machine I is by mechanical bearing III and IV supporting, rotating shaft II stretches out mechanical bearing III to the right, in its right part moving runner V is installed, if one section gravity that closes with moving runner V that rotating shaft II stretches out to the right is a, mechanical bearing III bears downforce b, and mechanical bearing IV bears top power c.Pressure b, last top power c make mechanical bearing III and IV serious wear respectively, and pressure b, last top power c also make rotating shaft II bear the wearing and tearing of moment of flexure and then aggravation mechanical bearing III and IV, and the life-span is shortened greatly; More discontented is, in this case, has strengthened the friction torque of horizontal rotating shaft II, and energy loss is big.

Summary of the invention

The purpose of this utility model is the defective that overcomes above-mentioned machine horizontal rotating shaft II supporting structure, at the mechanical bearing III of this rotating shaft of machine horizontal rotating shaft II Extension support and the outside of IV non-equilibrium magnetic force suspension bearing is installed, the gravity a of moving runner V of end that offsets or weaken described horizontal rotating shaft II overhanging one section and this end designs a kind of non-equilibrium magnetic force suspension bearing to the active force that the mechanical bearing III that supports this rotating shaft and IV produce.

The utility model is achieved through the following technical solutions:

Show that as Fig. 3 Fig. 4 described non-equilibrium magnetic force suspension bearing is made of rotor and stator: overlap between the 5 right and left rings platforms rotor that interior permanent magnetism circle 1 that solid cover axially magnetizes is formed described non-equilibrium magnetic force suspension bearing in rotating shaft; The outer permanent magnetism circle 2 that the septal space cover axially magnetizes outside interior permanent magnetism circle 1, the magnetizing direction of half of outer permanent magnetism circle 2 is opposite with second half, and outer permanent magnetism circle 2 is combined into by a whole circle or two tile shape magnets; The solid cylindrical sleeve ring 3 of permanent magnetism circle 2 outside, the both ends of the surface of permanent magnetism circle 2 and ring 3 are distinguished fixed circle 4 and 6 outside, there is nest in the left side of circle 4, there is nest on the right side of circle 6, outside the rotating shaft cover 5 that circle 4 and 6 mesopore and nest are enclosed within described rotor, the stator of described outer permanent magnetism circle 2, ring 3, circle 4 and the described non-equilibrium magnetic force suspension bearing of 6 compositions.The rotating shaft cover 5 of described rotor is enclosed within will be by on the horizontal rotating shaft of its supporting, be fixed in support or frame after making the polarity boundary diameter along continuous straight runs of outer permanent magnetism circle of stator and axis perpendicular to rotating shaft, like this, stator is made a concerted effort non-vanishing and very big to the magnetic that rotor produces up or down, this magnetic makes a concerted effort to be called non-equilibrium magnetic force, and stator the magnetic of other direction of rotor is made a concerted effort is zero.

The effect that the utility model is useful is:

1. because the stator of non-equilibrium magnetic force suspension bearing is made a concerted effort very big to the magnetic that rotor produces up or down, be used to support the horizontal rotating shaft of machine, can weaken or resist the sagging power of sled of an end of horizontal rotating shaft, and the last sled power that weakens or suppress the horizontal rotating shaft the other end, so can slow down or eliminate the infringement that gravity produces mechanical bearing on the horizontal axis of closing of moving runner on machine horizontal axis beam type overhanging one section and this section axle shaft end, the prolonged mechanical bearing life, reduce the horizontal rotating shaft friction torque greatly, reduce energy loss.Use described non-equilibrium magnetic force suspension bearing can reduce wind-driven generator horizontal rotating shaft friction torque greatly, also just can reduce detent torque greatly, realize breeze wind, make full use of wind resource, improve generating efficiency.Described non-equilibrium magnetic force suspension bearing is used for auxiliary magnetic suspension bearing wind-driven generator horizontal rotating shaft, high efficiency.

2. described non-equilibrium magnetic force suspension bearing is simple in structure, manufacturability is good, non-maintaining, the life-span is long.

3. the energy-saving and environmental protection of described non-equilibrium magnetic force suspension bearing.

Description of drawings

Fig. 1 is a kind of scheme of installation of background technique explanation or described non-equilibrium magnetic force suspension bearing;

Fig. 2 is the another kind of scheme of installation of described non-equilibrium magnetic force suspension bearing;

Fig. 3 is the structural representation of described non-equilibrium magnetic force suspension bearing;

Fig. 4 is the A-A sectional drawing of Fig. 3.

Embodiment

Describe in detail below in conjunction with embodiment and Figure of description.

Embodiment: show that as Fig. 3 Fig. 4 described non-equilibrium magnetic force suspension bearing is made of rotor and stator: overlap between the 5 right and left rings platforms rotor that interior permanent magnetism Fig. 1 that solid cover axially magnetizes forms described non-equilibrium magnetic force suspension bearing in rotating shaft; The outer permanent magnetism circle 2 that the septal space cover axially magnetizes outside interior permanent magnetism circle 1, the magnetizing direction of half of outer permanent magnetism circle 2 is opposite with second half, and outer permanent magnetism circle 2 is combined into by a whole circle or two tile shape magnets; The solid cylindrical sleeve ring 3 of permanent magnetism circle 2 outside, the both ends of the surface of permanent magnetism circle 2 and ring 3 are distinguished fixed circle 4 and 6 outside, there is nest in the left side of circle 4, there is nest on the right side of circle 6, outside the rotating shaft cover 5 that circle 4 and 6 mesopore and nest are enclosed within described rotor, the stator of described outer permanent magnetism circle 2, ring 3, circle 4 and the described non-equilibrium magnetic force suspension bearing of 6 compositions.The rotating shaft cover 5 of described rotor is enclosed within will be by on the horizontal rotating shaft of its supporting, be fixed in support or frame after making the polarity boundary diameter along continuous straight runs of outer permanent magnetism circle of stator and axis perpendicular to rotating shaft, like this, stator is made a concerted effort non-vanishing and very big to the magnetic that rotor produces up or down, this magnetic makes a concerted effort to be called non-equilibrium magnetic force, and stator the magnetic of other direction of rotor is made a concerted effort is zero.

Show as Fig. 1, described non-equilibrium magnetic force suspension bearing is installed described non-equilibrium magnetic force suspension bearing VI in the side of the mechanical bearing III of this rotating shaft of machine horizontal rotating shaft II Extension support, and it is offset the magnetic force e of an II that flats turn and d or weakens active force b and the c that the gravity a of moving runner V of the end of described horizontal rotating shaft II overhanging a section and this end produces the mechanical bearing III that supports this rotating shaft and IV.

Show as Fig. 2, described non-equilibrium magnetic force suspension bearing is respectively installed a described non-equilibrium magnetic force suspension bearing VI at the mechanical bearing III of this rotating shaft of machine horizontal rotating shaft II Extension support and the outside of IV, and its magnetic force e, d to an II that flats turn, f, g offset or weaken active force b and the c that the gravity a of moving runner V of the end of described horizontal rotating shaft II overhanging a section and this end produces the mechanical bearing III that supports this rotating shaft and IV.

Claims

1. non-equilibrium magnetic force suspension bearing is characterized in that: be made of rotor and stator: the interior permanent magnetism circle (1) that solid cover axially magnetizes between rotating shaft cover (5) right and left rings platform is formed the rotor of described non-equilibrium magnetic force suspension bearing; The outer permanent magnetism circle (2) that the septal space cover axially magnetizes outside interior permanent magnetism circle (1), the magnetizing direction of half of outer permanent magnetism circle (2) is opposite with second half, and outer permanent magnetism circle (2) is combined into by a whole circle or two tile shape magnets; The solid cylindrical sleeve ring (3) of permanent magnetism circle (2) outside, the both ends of the surface of permanent magnetism circle (2) and ring (3) are distinguished fixed circle (4) and (6) outside, there is nest in the left side of circle (4), there is nest on the right side of circle (6), outside the rotating shaft cover (5) that the mesopore of circle (4) and (6) and nest are enclosed within described rotor, the stator of described outer permanent magnetism circle (2), ring (3), circle (4) and the described non-equilibrium magnetic force suspension bearing of (6) composition.