CN111664173A

CN111664173A - Double-layer ectopic bearing and dustproof mechanism for double-shaft reverse rotation structure

Info

Publication number: CN111664173A
Application number: CN202010396013.0A
Authority: CN
Inventors: 刘应华
Original assignee: 刘应华
Current assignee: SHANDONG CAMERY (KMR) BEARING SCIENCE & TECHNOLOGY CO.,LTD.; Shandong xiuhan inspection and Testing Co., Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-09-15
Anticipated expiration: 2040-05-12
Also published as: CN111664173B

Abstract

The invention relates to the technical field of bearings, and discloses a double-layer ectopic bearing and a dustproof mechanism for a double-shaft reverse rotation structure, wherein an inner bearing is positioned in the middle of the inner surface of a middle ring, outer bearings are positioned on two sides of the outer surface, so that the contact positions of rollers of the bearings on two sides and the middle ring are not on the same plane, the problem that the service life of the middle ring is shortened due to the fact that the rollers of the double-layer bearing rub two sides of the middle ring simultaneously is solved, when the bearings rotate, the rollers in the outer bearings reduce the pressure on the outer side of the middle ring by centrifugal force, so that the friction force on the outer surface of the middle ring is reduced, the service life of the middle ring is further prolonged, on the other hand, clamping blocks are arranged at two ends of the middle ring, the structure of the outer bearing is a tapered roller bearing, one side of the outer bearing is jointed with the clamping blocks, the mounting directions, the axial stress of the transmission device in the double-shaft reverse rotation structure is reduced, and the structure can run more stably.

Description

Double-layer ectopic bearing and dustproof mechanism for double-shaft reverse rotation structure

Technical Field

The invention relates to the technical field of bearings, in particular to a double-layer ectopic bearing and a dustproof mechanism for a double-shaft reverse rotation structure.

Background

The double-shaft reversing structure is a structure which drives two axes to rotate on the same central line through a power device, the two rotating shafts have opposite rotating directions, the mechanical structure can ensure that the torque between the two transmission shafts is balanced mutually, the vibration generated by the rotation of the transmission shafts is greatly reduced, the two transmission shafts are often connected by adopting a bearing to ensure that the two transmission shafts can be reversed without mutual interference, because the outer ring and the inner ring of the bearing need to rotate along with the rotating shafts, the friction force borne by the balls or the rollers in the single-layer bearing is twice of that under the normal working condition, in the structure, a double-layer bearing needs to be adopted, when the outer ring and the inner ring of the bearing rotate along with the rotating shafts, the middle ring can be static or rotate at low rotating speed under the action of the balls or the rollers with opposite rotating directions at the two sides, meanwhile, the outer ring and the inner ring are provided with an independent set of balls or rollers, so that the service life of the bearing in the structure can be greatly prolonged.

Because current double-deck bearing is under this structure work, the both sides of well circle receive the friction of ball or roller simultaneously, lead to well circle very easily to receive wearing and tearing and produce fatigue failure, lead to well circle to scrap and make whole double-deck bearing unable normal work, simultaneously, the inside of this bearing exposes in the air completely, dust in the air invades the inside messenger's of bearing very easily and receives destruction, lead to the life of bearing to reduce, for this reason, provide a double-deck dystopy bearing and dustproof mechanism for biax counter-rotation structure, aim at solving above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art in the background art in the using process, the invention provides a double-layer ectopic bearing and a dustproof mechanism for a double-shaft reverse rotation structure, which have the advantages of prolonging the service life of a middle ring and better dedusting effect and solve the problems in the background art.

The invention provides the following technical scheme: the utility model provides a double-deck dystopy bearing and dustproof mechanism for biax reverse rotation structure, includes well circle, the inboard middle part cover of well circle is equipped with the inner bearing, it all overlaps on the position that the well circle outside is located both ends and is equipped with the outer bearing, the fixed cover in both ends of well circle has connect magnet, the fixed outer lane that has cup jointed in the outside of outer bearing, the inboard of inner bearing is fixed and has been cup jointed the inner circle, both ends fixed mounting has sealing device about the cavity between inner circle and the outer lane.

Preferably, the two ends of the middle ring are provided with clamping blocks, and one side of the outer bearing is attached to the clamping blocks.

Preferably, the structure of the inner bearing is a roller bearing, the structure of the outer bearing is a tapered roller bearing, and the mounting directions of the outer bearings on the two sides of the middle ring are opposite.

Preferably, the sealing device comprises a lower sealing plate, a wire is arranged at the top of the lower sealing plate, an upper sealing plate is arranged at the top of the wire, the outer surfaces of the lower sealing plate and the upper sealing plate are fixedly arranged on the inner wall of the outer ring, one end of the wire is connected with the lower sealing plate, the other end of the wire is connected with the upper sealing plate, a clamping groove is formed in one side of a gap between the lower sealing plate and the upper sealing plate, and a sealing ring is fixedly clamped in the clamping groove.

Preferably, the material of the sealing ring is rubber, and the inner side of the sealing ring is attached to the outer side of the inner ring.

Preferably, the shape of the lead is a flower shape.

The invention has the following beneficial effects:

1. the invention avoids the problem that the service life of the middle ring is reduced because the rollers of the bearings at two sides and the middle ring are simultaneously rubbed by the rollers of the double-layer bearing through the inner bearings positioned at the middle part of the inner surface of the middle ring and the outer bearings positioned at two sides of the outer surface, and the roller of the outer bearing reduces the pressure on the outer side of the middle ring by centrifugal force when the bearings rotate, thereby reducing the friction force on the outer surface of the middle ring and further improving the service life of the middle ring, on the other hand, the two ends of the middle ring are provided with the clamping blocks, the structure of the outer bearing is a tapered roller bearing, one side of the outer bearing is attached to the clamping blocks, the mounting directions of the outer bearing positioned at two sides of the middle ring are opposite, so that the outer bearing can bear axial load, and the axial stress of a transmission device in a double-shaft reverse rotation structure is, the structure can operate more stably.

2. The invention is characterized in that the top of the lower sealing plate is provided with a lead, the appearance of the lead is in a flower shape, the lead is fixedly arranged on the inner wall of the outer ring through the outer surfaces of the lower sealing plate and the upper sealing plate, when the outer ring rotates, the lead cuts a magnetic field generated by a magnet and generates induced electromotive force, one end of the lead is connected with the lower sealing plate, the other end of the lead is connected with the upper sealing plate, so that the lower sealing plate and the upper sealing plate are electrified and adsorb dust in air, the dust is prevented from entering the inside of the bearing to scratch the surface of the roller and the bearing, the service life of the bearing is prolonged, on the other hand, one side of an air gap between the lower sealing plate and the upper sealing plate is provided with a clamping groove, the clamping groove is fixedly clamped with a sealing ring, the sealing ring is made of rubber, the inner, the sealing ring contracts in the gap between the lower sealing plate and the upper sealing plate under the action of centrifugal force, so that the outer side of the sealing ring is separated from the outer surface of the inner ring, the sealing ring cannot be in contact with the outer side of the inner ring to eliminate friction, the wire can be restored after the rotation is stopped, the inner side of the wire is in contact with the outer surface of the inner ring again to isolate the inner side and the outer side of the bearing, the problem that dust adsorbed by the sealing device falls into the inner part of the bearing due to static elimination is avoided, and the sealing performance of the bearing is further improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional front view of the structure of the present invention

Fig. 4 is a schematic view of a structural sealing device of the present invention.

In the figure: 1. a middle ring; 2. an inner bearing; 3. an outer bearing; 4. a magnet; 5. an outer ring; 6. an inner ring; 7. A sealing device; 71. a lower sealing plate; 72. a wire; 73. an upper sealing plate; 74. a seal ring; 8. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a double-layer ectopic bearing and dustproof mechanism for a double-shaft reverse rotation structure comprises a middle ring 1, an inner bearing 2 is sleeved at the middle part of the inner side of the middle ring 1, outer bearings 3 are sleeved at the positions of the two ends of the outer side of the middle ring 1, the inner bearing 2 is a roller bearing, the outer bearing 3 is a conical roller bearing, the mounting directions of the outer bearings 3 at the two sides of the middle ring 1 are opposite, magnets 4 are fixedly sleeved at the two ends of the middle ring 1, an outer ring 5 is fixedly sleeved at the outer side of the outer bearing 3, an inner ring 6 is fixedly sleeved at the inner side of the inner bearing 2, sealing devices 7 are fixedly mounted at the upper end and the lower end of a cavity between the inner ring 6 and the outer ring 5, each sealing device 7 comprises a lower sealing plate 71, a lead 72 is arranged at the top of the lower sealing plate 71, the lead 72 is in a flower, the outer fixed surface of lower sealing plate 71 and upper sealing plate 73 installs on the inner wall of outer lane 5, the one end of wire 72 links to each other with lower sealing plate 71, the other end of wire 72 links to each other with upper sealing plate 73, one side in space is provided with the draw-in groove and this draw-in groove internal fixation joint has sealing ring 74 between lower sealing plate 71 and the upper sealing plate 73, the material of sealing ring 74 is rubber, and the inboard of sealing ring 74 is laminated mutually with the outside of inner circle 6, the both ends of well circle 1 are provided with fixture block 8, one side and the fixture block 8 of outer bearing 3 are laminated mutually.

Wherein, lie in the middle part of 1 internal surface of centre circle through inner bearing 2, outer bearing 3 is located the both sides of surface, the contact position that makes the roller of both sides bearing and centre circle 1 is not on same plane, the roller of avoiding appearing double-deck bearing rubs the problem that makes centre circle life reduce simultaneously to centre circle both sides, when the bearing rotates, centrifugal force makes the roller in the outer bearing 3 reduce the pressure to the 1 outside of centre circle, thereby reduce the frictional force to the 1 external surface of centre circle, the life of centre circle 1 has further been improved.

Wherein, both ends through center ring 1 are provided with fixture block 8, and the structure of outer bearing 3 is that one side and fixture block 8 of tapered roller bearing and outer bearing 3 are laminated mutually and the installation direction that outer bearing 3 is located center ring 1 both sides is opposite, makes outer bearing 3 can bear axial load, has reduced transmission's among the biax counter-rotating structure axial atress, makes the operation that this structure can be more stable.

The top of the lower sealing plate 71 is provided with the lead 72, the shape of the lead 72 is flower-shaped, the lead 72 is fixedly arranged on the inner wall of the outer ring 5 through the outer surfaces of the lower sealing plate 71 and the upper sealing plate 73, when the outer ring 5 rotates, the lead 72 cuts a magnetic field generated by the magnet 4 and generates induced electromotive force, one end of the lead 72 is connected with the lower sealing plate 71, the other end of the lead 72 is connected with the upper sealing plate 73, so that the lower sealing plate 71 and the upper sealing plate 73 are electrified and adsorb dust in the air, the dust is prevented from entering the inside of the bearing to scratch the surface of the roller and the bearing, and the service life of the bearing is prolonged.

Wherein, one side through the space between lower seal plate 71 and upper seal plate 73 is provided with the draw-in groove and this draw-in groove internal fixation has connect the sealing ring 74, the material of sealing ring 74 is rubber, and the inboard of sealing ring 74 is laminated with the outside of inner circle 6 mutually, when outer lane 5 rotated, sealing ring 74 contracted in the gap between lower seal plate 71 and the upper seal plate 73 under the effect of centrifugal force, make its outside break away from the outer surface of inner circle 6, thereby make sealing ring 74 and the outside of inner circle 6 unable contact and eliminate friction, the wire 72 will recover after the rotation stops, thereby the inboard of wire 72 contacts with the outer surface of inner circle 6 again and makes the inboard and the outside of bearing isolated, avoided the adsorbed dust of sealing device 7 to fall into the inside problem of bearing because of static elimination, further improved the sealing performance of this bearing.

The using method of the invention is as follows:

when the double-shaft reverse rotation structure works, the outer ring 5 and the inner ring 6 start to rotate reversely, the inner bearing 2 and the outer bearing 3 are not in the same plane, so that the friction received by the middle ring 1 is not in the same position, the directions of the friction received by the two sides of the middle ring 1 are opposite, the middle ring 1 is in static state or low-speed rotation, the outer ring 5 can drive the sealing device 7 to rotate while rotating, the wire 72 in the sealing device 7 can cut the magnetic field of the magnet 4 to generate electromotive force, so that the lower sealing plate 71 and the upper sealing plate 73 are electrified to adsorb dust in the air, meanwhile, the sealing ring 74 contracts under the action of centrifugal force, so that the sealing ring 74 is not in contact with the outer surface of the inner ring 6, and when the outer ring 5 stops rotating, the sealing ring 74 can reset and is in contact with the outer surface of the inner ring 6, so that.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-deck dystopy bearing and dustproof mechanism for biax counter-rotating structure, includes well circle (1), its characterized in that: the middle part cover of well circle (1) inboard is equipped with inner bearing (2), it is equipped with outer bearing (3) all to overlap on the position that well circle (1) outside is located both ends, the fixed cover in both ends of well circle (1) has connect magnet (4), outer bearing's (3) outside is fixed cup jointed outer lane (5), inner ring (6) have been fixed to cup jointed in the inboard of inner bearing (2), both ends fixed mounting has sealing device (7) about the cavity between inner ring (6) and outer lane (5).

2. The double-layer ectopic bearing and dustproof mechanism for the double-shaft reverse rotation structure as claimed in claim 1, wherein: the two ends of the middle ring (1) are provided with clamping blocks (8), and one side of the outer bearing (3) is attached to the clamping blocks (8).

3. The double-layer ectopic bearing and dustproof mechanism for the double-shaft reverse rotation structure as claimed in claim 1, wherein: the structure of the inner bearing (2) is a roller bearing, the structure of the outer bearing (3) is a tapered roller bearing, and the mounting directions of the outer bearing (3) on two sides of the middle ring (1) are opposite.

4. The double-layer ectopic bearing and dustproof mechanism for the double-shaft reverse rotation structure as claimed in claim 1, wherein: sealing device (7) include lower sealing plate (71), the top of lower sealing plate (71) is provided with wire (72), the top of wire (72) is provided with upper seal plate (73), the surface fixed mounting of lower sealing plate (71) and upper seal plate (73) is on the inner wall of outer lane (5), the one end of wire (72) links to each other with lower sealing plate (71), the other end and the upper seal plate (73) of wire (72) link to each other, the one side in space is provided with the draw-in groove and this draw-in groove internal fixation joint has sealing ring (74) between lower sealing plate (71) and upper seal plate (73).

5. The double-layer ectopic bearing and dustproof mechanism for the double-shaft reverse rotation structure as claimed in claim 4, wherein: the sealing ring (74) is made of rubber, and the inner side of the sealing ring (74) is attached to the outer side of the inner ring (6).

6. The double-layer ectopic bearing and dustproof mechanism for the double-shaft reverse rotation structure as claimed in claim 4, wherein: the shape of the lead (72) is a flower shape.