CN208089764U - A kind of hollow revolving platform of magnetic force - Google Patents

Abstract

The utility model discloses a kind of hollow revolving platform of magnetic force, including rack, rack is connected with revolving platform ontology by magnetic bearing, the revolving platform ontology includes push pipe part, it is fixed with bottom tube part below push pipe part, bottom tube part bottom has central shaft hole, and several grooves for installing strip magnet steel are uniformly formed in central shaft hole, isolation cover is installed, the underrun bolt of isolation cover and bottom tube part is fixedly mounted in central shaft hole；Input shaft is installed in isolation cover, adjusting sleeve is fixed with outside input shaft, adjusts and is fixed with the annular magnetic steel coordinated with strip magnet steel on sleeve；Between annular magnetic steel and isolation cover, gap is equipped between isolation cover and strip magnet steel.The utility model makes hollow revolving platform, stable drive, efficient, and compact-sized, service life has been significantly greatly increased in no mechanical friction, and proposes a kind of magnetic bearing, and the bearing is small, has aligning function, can bear radial load and axial force.

Description

A kind of hollow revolving platform of magnetic force

Technical field

This patent belongs to machinery field more particularly to a kind of hollow revolving platform of magnetic force.

Background technology

Existing hollow revolving platform, which is the friction by gear drive, but between gear, leads to kinetic equation loss and machinery Fever, reduces the performance and used life of device, and after long time running, needs to carry out aligning, ensures shaft and rotating platform Coaxial arrangement, in order to avoid due to being shaken caused by different axis.

Utility model content

To solve the above problems, the utility model discloses a kind of hollow revolving platforms of magnetic force.During the utility model makes Empty revolving platform, stable drive, efficient, compact-sized, no mechanical friction has been significantly greatly increased service life, and has proposed one kind Magnetic bearing, the bearing is small, has aligning function, can bear radial load and axial force.

To achieve the above object, the technical solution of the utility model is：

A kind of hollow revolving platform of magnetic force, including rack, rack is connected with revolving platform ontology by magnetic bearing, described Revolving platform ontology includes push pipe part, is fixed with bottom tube part below push pipe part, bottom tube part bottom has central shaft hole, central shaft It is uniformly formed with several grooves for installing strip magnet steel in hole, isolation cover, isolation cover and bottom tube are installed in central shaft hole The underrun bolt of part is fixedly mounted；Input shaft is installed in isolation cover, adjusting sleeve is fixed with outside input shaft, adjusts sleeve On be fixed with the annular magnetic steel coordinated with strip magnet steel；Between annular magnetic steel and isolation cover, between isolation cover and strip magnet steel Equipped with gap；The magnetic bearing includes the inner shaft being connected with revolving platform ontology and the outer ring that is connected with rack, solid outside inner shaft Surely it is the upper inner ring shape magnet steel and lower inner ring shape magnet steel of triangle to have section；Outer ring top is fixed with to be coordinated with upper inner ring shape magnet steel Upper outer shroud magnet steel, outer ring top is fixed with the lower outer shroud magnet steel coordinated with lower inner ring shape magnet steel；Pass through between inner shaft and outer ring Upper end cover and bottom end cover sealing.

Further to improve, the upper inner ring shape magnet steel and lower inner ring shape magnet steel are fixed on by adjusting bracket in inner shaft.

It is further to improve, it is arranged with sealing ring outside the push pipe part, packaging ring is fixed with outside sealing ring, packaging ring is solid outside Surely there is solid lock ring.

Description of the drawings

The overall structure diagram of Fig. 1 the utility model；

Fig. 2 magnetic bearing structural schematic diagrams；

Fig. 3 magnetic bearing principle schematics.

Wherein, 1- racks；2- solid lock rings；3- packaging rings；4- sealing rings；5- push pipe parts；6- bottom tube parts；7- magnetic bearings； 8- bolts；9- strip magnet steel；10- sealing rings；11- input shafts；12- adjusts sleeve；13- annular magnetic steels；14- isolation covers；21- Inner shaft；22- upper end covers；23- bottom end covers；The outer rings 24-；25- upper inner ring shape magnet steel；26- adjusting brackets；27- lower inner ring shape magnetic Steel；Outer shroud magnet steel under 28-；The upper outer shroud magnet steel of 29-.

Specific implementation mode

Embodiment 1

As shown in Figs. 1-3, as shown in Figure 1, hollow revolving platform structural schematic diagram.The generally hollow cylinder class of rack 1 is returned Swivel, is evenly arranged with the connecting hole 111 of connection at outer circle terminal pad.Solid lock ring 2 is installed in the top of rack 1, Gu Lock ring 2 is a rounded ring body, is screw-locked at the periphery on 1 top of rack.Be equipped between solid lock ring 2 and push pipe part 5 packaging ring 3 and Sealing ring 4.Push pipe part 5 and bottom tube part 6 are cylinder type hollow revolving body.Push pipe part 5, which is fixed with bottom tube part 6 by bolt 8, to be connected It connects.Rack 1, solid lock ring 2, push pipe part 5 and bottom tube part 6 are both provided with toroidal cavity, are combined into a circular ring shape and embed space, use To install magnetic bearing 7.Uniformly distributed groove is machined in the central shaft hole of bottom tube part 6 to be used for that strip magnet steel 9 is installed.Cup type is isolated It is stretched into hole by bolted on connection, cup type part between cover 14 and bottom tube part 6.Sealing is provided between isolation cover 14 and bottom tube part Circle.The input shaft 11 for being equipped with adjusting sleeve 12 is arranged in isolation cover, is adjusted and is equipped with annular magnetic steel 13 outside sleeve, and with The bar magnet magnetic coupling installed in centre bore.Input shaft can drive bottom tube part 6 and push pipe part 5 to form stage body when rotating turns It is dynamic.

Such as Fig. 2, shown in 3, magnetic bearing structural schematic diagram.It is all machined on outer ring 2, upper end cover 22 and bottom end cover 23 uniformly distributed Groove be used for several triangle magnet steel are installed.Adjusting bracket 26 is installed in inner shaft.The mid diameter of adjusting bracket is more than two Diameter is held, several magnet steel opposite with outer ring magnetic steel are installed.It is required that adjustment magnet steel position makes inner ring steel magnet Impact direction converge In same point.Magnet steel (upper inner ring shape magnet steel and upper outer shroud magnet steel, lower inner ring shape magnet steel and lower outer shroud magnet steel) between inner ring, outer ring Inclined-plane is generated the repulsion perpendicular to inclined-plane by mutually exclusive, and component axially and radially makes rotor suspension in the stator Between, ensure that rotor steadily can reach balance when rotating speed is sufficiently large in six-freedom degree, and bear radial direction in a certain range Power and axial force.

Although the embodiments of the present invention have been disclosed as above, it is not restricted to institute in specification and embodiment Row use, it can be applied to various fields suitable for the present invention completely, for those skilled in the art, can Easily realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, this practicality It is novel to be not limited to specific details and the legend herein shown with description.

Claims (3)

1. a kind of hollow revolving platform of magnetic force, including rack (1), which is characterized in that rack (1) is connected by magnetic bearing (7) It includes push pipe part (5) to have revolving platform ontology, the revolving platform ontology, and bottom tube part (6), bottom are fixed with below push pipe part (5) Pipe fitting (6) bottom has central shaft hole, and several grooves for installing strip magnet steel (9) are uniformly formed in central shaft hole, Isolation cover (14) is installed, isolation cover (14) and the underrun bolt of bottom tube part (6) are fixedly mounted in central shaft hole；Isolation cover (14) input shaft (11) is installed in, is fixed with outside input shaft (11) and adjusts sleeve (12), adjust be fixed on sleeve (12) with The annular magnetic steel (13) of strip magnet steel (9) cooperation；Between annular magnetic steel (13) and isolation cover (14), isolation cover (14) and strip magnetic Steel is equipped with gap between (9)；The magnetic bearing (7) includes the inner shaft (21) and and rack being connected with revolving platform ontology (1) connected outer ring (24), inner shaft (21) are fixed with the upper inner ring shape magnet steel (25) and lower inner ring shape magnetic that section is triangle outside Steel (27)；Outer ring (24) top is fixed with the upper outer shroud magnet steel (29) coordinated with upper inner ring shape magnet steel (25), outer ring (24) top It is fixed with the lower outer shroud magnet steel (28) coordinated with lower inner ring shape magnet steel (27)；Pass through upper end cover between inner shaft (21) and outer ring (24) (22) it is sealed with bottom end cover (23).

2. the hollow revolving platform of magnetic force as described in claim 1, which is characterized in that the upper inner ring shape magnet steel (25) and lower interior Annular magnetic steel (27) is fixed on by adjusting bracket (26) in inner shaft (21).

3. the hollow revolving platform of magnetic force as described in claim 1, which is characterized in that be arranged with sealing outside the push pipe part (5) It encloses (4), packaging ring (3) is fixed with outside sealing ring (4), solid lock ring (2) is fixed with outside packaging ring (3).