CN213451343U

CN213451343U - Roller bearing

Info

Publication number: CN213451343U
Application number: CN202022017848.9U
Authority: CN
Inventors: 洪斌
Original assignee: Anhui Pifu Bearing Co ltd; Wuhu Renben Automotive Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Anhui Pifu Bearing Co ltd; Wuhu Renben Automotive Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-06-15
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a roller bearing, including outer lane, inner circle, holder and the roller of setting in the holder, the roller is the spherical roller of radial symmetry, spherical roller includes big head end and stub end, the outer lane internal surface has the outer raceway with spherical roller adaptation, the inner circle surface has the interior raceway of spherical roller adaptation, spherical roller sets up between outer raceway and the interior raceway and spherical roller's stub end radially leans out the setting, interior raceway corresponds spherical roller's stub end and is provided with the spacing step of contradicting with spherical roller stub end terminal surface, the stub end that corresponds spherical roller bearing between outer lane and the inner circle is provided with first sealing washer and corresponds spherical roller is provided with the second sealing washer. The utility model provides a can enough possess the aligning function, can bear the roller bearing of great radial load and axial load again.

Description

Roller bearing

Technical Field

The utility model belongs to the technical field of the bearing, especially, roller bearing.

Background

At present, a conventional roller bearing mainly comprises a self-aligning roller bearing and a tapered roller bearing, wherein the self-aligning roller bearing has higher radial load capacity, is particularly suitable for working under heavy load or vibration load, but cannot bear pure axial load or the working condition of higher axial load, and the outer ring raceway of the bearing is spherical, so that the self-aligning performance is good, and the coaxiality error can be compensated. The tapered roller bearing belongs to a separated bearing, the inner ring and the outer ring of the bearing are both provided with tapered roller paths, and the bearing is divided into single-row, double-row and four-row tapered roller bearings and other different structural types according to the row number of the mounted rollers. The single-row tapered roller bearing can bear radial load and single-direction axial load. When the bearing is loaded in radial direction, an axial component will be generated, so another bearing capable of bearing opposite axial force is needed for balancing, but the bearing does not have the function of aligning. In summary, the self-aligning roller bearing and the tapered roller bearing have certain advantages, but in some specific working conditions, the bearing needs to bear a large radial load, and needs to have certain axial bearing capacity and a certain aligning function, and both the self-aligning roller bearing and the tapered tube bearing cannot meet the requirements.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a roller bearing which can not only have the aligning function, but also can bear larger radial load and axial load.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a roller bearing, includes outer lane, inner circle, holder and the roller of setting in the holder, the roller is radial symmetry's spherical roller, spherical roller includes big head end and little head end, the outer lane internal surface have with the outer raceway of spherical roller adaptation, the inner circle surface has the interior raceway of spherical roller adaptation, spherical roller sets up between outer raceway and the interior raceway and the little head end radial of spherical roller lean out the setting, the little head end that interior raceway corresponds spherical roller is provided with the spacing step of contradicting with the little head end of spherical roller end face, the big head end that corresponds spherical roller bearing between outer lane and the inner circle is provided with first sealing washer and the little head end that corresponds spherical roller is provided with the second sealing washer.

By adopting the scheme, the side surface of the roller is arranged to form the spherical surface, and the outer raceway and the inner raceway are matched with the side surface of the spherical roller, so that the aim of aligning is fulfilled. In addition, set the both ends of spherical roller to like tapered roller, make it have big head end and little head end, set up little head end slope moreover, the terminal surface of little head end can with the spacing step spacing cooperation of interior raceway to can be used for bearing unidirectional axial load (if need bear two-way axial load, only need the symmetry set up a set of this scheme roller bearing can). According to the scheme, the advantages of the self-aligning roller bearing and the tapered roller bearing are integrated, so that the roller bearing can bear axial and radial loads and can achieve the function of aligning. Between outer lane and inner circle, set up first sealing washer and second sealing washer respectively at axial both ends, can guarantee that the bearing grease does not reveal, for the bearing provides long-term lubrication and cooling effect, extension bearing life.

As a further setting of the utility model, first sealing washer is including sealed skeleton, the internal diameter end grafting of sealed skeleton is fixed on a side end face of inner circle, the internal diameter end of sealed skeleton is adhered to the first seal lip with inner circle side end face butt, the external diameter end of sealed skeleton is adhered to the second seal lip and the third seal lip with outer raceway elasticity butt.

By adopting the scheme, one end of the sealing framework is fixedly connected with one side end face of the inner ring in an inserting mode, so that the sealing framework can rotate along with the rotation of the inner ring, the sealing performance between the first sealing lip and the inner ring is guaranteed, meanwhile, the friction between the first sealing lip and the inner ring is reduced, the torque is reduced, and the loss is reduced. And the outer end of the sealing framework is attached with the second sealing lip and the third sealing lip which are elastically abutted to the outer raceway, so that the sealing performance can be improved, and the grease leakage can be prevented. Simple structure and convenient installation.

As a further arrangement of the present invention, the inner end surface of the sealing frame has a plurality of elastic pieces along the circumferential direction, which can be used for abutting against the holder.

Adopt above-mentioned scheme, because, inside the bearing, receive spherical roller's aligning effect, roller and holder can produce certain displacement in the bearing is inside, thereby can form certain vibration, this kind of vibration can influence the life of bearing, in order to reduce the influence that the vibration produced to the bearing, through some shell fragments of inner terminal surface equipartition at sealed skeleton, when the roller produces the displacement, can pass through shell fragment and holder butt, thereby reach the purpose of damping, can effectively reduce the influence that the vibration brought, extension bearing life. Simple structure and convenient processing.

As a further setting of the utility model, the other end terminal surface of inner circle is provided with cyclic annular slot, and the inside wall of cyclic annular slot inwards distributes in proper order along the axial has first spacing annular and the spacing annular of second, the internal diameter end of second sealing washer has along axial extension to be used for inserting cyclic annular inserted sheet in the cyclic annular slot, the lateral wall of cyclic annular inserted sheet is provided with and is used for imbedding first spacing annular or the spacing annular of second in order to form the spacing cyclic annular lug of axial, the external diameter end of second sealing washer contradicts the cooperation with outer raceway when cyclic annular lug imbeds first spacing annular, the external diameter end of second sealing washer with outer raceway clearance fit when cyclic annular lug imbeds the spacing annular second.

By adopting the scheme, the outer diameter end of the second sealing ring is in interference fit with the outer raceway when the annular convex block is embedded into the first limiting ring groove, and at the moment, the outer diameter end of the second sealing ring is in interference fit with the outer raceway, so that the sealing performance can be improved, the leakage of grease is reduced, and the bearing sealing device is suitable for a working condition environment with higher requirement on bearing sealing; the outer diameter end of the second sealing ring is in clearance fit with the outer raceway when the annular convex block is embedded into the second limiting ring groove, at the moment, certain sealing performance is reduced, but the clearance fit can reduce friction, so that certain energy loss can be reduced, the sealing device is suitable for working conditions which have low sealing requirements but have certain requirements on energy loss, the bearing can meet the use working conditions with different requirements due to the universal arrangement, and the universality of the bearing is improved.

As the utility model discloses a further setting, the lateral wall of outer lane is provided with the oil filler point and is used for the oil plug of shutoff oil filler point, the outer lane is provided with the oil duct that is used for intercommunication oil filler point and bearing inside respectively to the axial both ends of roller.

By adopting the scheme, through the oil filler point, the inside oil of mending of bearing is convenient, bearing life can be prolonged, and the outer lane is provided with the oil duct respectively to the axial both ends of roller and can makes the grease of replenishment distribute more evenly in the bearing inside.

The present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of portion C of FIG. 1;

fig. 5 is a schematic structural view of the interference fit between the outer diameter end of the second seal ring and the outer raceway according to the embodiment of the present invention.

Detailed Description

The embodiment of the utility model is shown in figures 1-5, a roller 4 bearing comprises an outer ring 1, an inner ring 2, a retainer 3 and a roller 4 arranged in the retainer 3, the roller 4 is a spherical roller 4 with radial symmetry, the spherical roller 4 comprises a big head end 41 and a small head end 42, the inner surface of the outer ring 1 is provided with an outer raceway 11 matched with the spherical rollers 4, the outer surface of the inner ring 2 is provided with an inner raceway 42 matched with the spherical rollers 4, the spherical roller 4 is arranged between the outer raceway 11 and the inner raceway 42 and the small end 42 of the spherical roller 4 is arranged radially and obliquely outwards, the inner raceway 42 is provided with a limit step 22 corresponding to the small end 42 of the spherical roller 4 and abutting against the small end 42 of the spherical roller 4, a first sealing ring 5 is arranged between the outer ring 1 and the inner ring 2 corresponding to the big end 41 of the spherical roller 4 bearing, and a second sealing ring 6 is arranged corresponding to the small end 42 of the spherical roller 4.

In this embodiment, the first sealing ring 5 includes a sealing frame 51, the sealing frame 51 is made of metal, preferably stainless steel, the inner diameter end 51a of the sealing framework 51 is inserted and fixed on one side end face of the inner ring 2, an annular insertion block 52 is axially extended from the inner diameter end 51a of the sealing framework 51, an annular insertion hole 23 which is matched and inserted with the annular insertion block 52 is arranged on the end surface of one side of the inner ring 2, the side wall of the annular inserting hole 23 is provided with an annular limiting groove 231, the annular inserting block 52 is provided with an annular limiting block 521 which is in limiting fit with the annular limiting groove 231, a first seal lip 511 which abuts against one end surface of the inner ring 2 is attached to an inner diameter end 51a of the seal frame 51, the second seal lip 512 and the third seal lip 513 elastically abutting against the outer race 11 are attached to the outer diameter end 51b of the seal frame 51.

In this embodiment, a plurality of spring plates 514 that can be used to abut against the holder 3 are uniformly distributed along the circumferential direction on the inner end surface of the sealing frame 51.

In this embodiment, the other end terminal surface of inner circle 2 is provided with cyclic annular slot 24, and the inside wall of cyclic annular slot 24 inwards distributes in proper order along the axial has first spacing annular groove 241 and the spacing annular groove 242 of second, the internal diameter end 6a of second sealing washer 6 has along axial extension to be used for inserting cyclic annular inserted sheet 61 in the cyclic annular slot 24, the lateral wall of cyclic annular inserted sheet 61 is provided with and is used for imbedding first spacing annular groove 241 or the spacing annular groove 242 of second in order to form the spacing cyclic annular lug 611 of axial, the external diameter end 6b of second sealing washer 6 contradicts the cooperation with outer raceway 11 when cyclic annular lug 611 imbeds first spacing annular groove 241, the external diameter end 6b of second sealing washer 6 with outer raceway 11 clearance fit when cyclic annular lug 611 imbeds second spacing annular groove 242. The second sealing ring 6 is externally adhered with an elastic rubber layer to improve the sealing performance, the part of the annular inserting sheet 61 can be made of hard material as a substrate, preferably hard alloy, and then the rubber layer is adhered to the outside, so that the annular inserting sheet 61 is inserted into the annular slot 24

In this embodiment, the outer side wall of the outer ring 1 is provided with an oil filling hole 12 and an oil plug 13 for blocking the oil filling hole 12, and the outer ring 1 is provided with oil passages 14 for communicating the oil filling hole 12 with the interior of the bearing respectively towards the two axial ends of the roller 4.

The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.

Claims

1. The utility model provides a roller bearing, includes outer lane, inner circle, holder and the roller of setting in the holder, its characterized in that: the roller is radial symmetry's spherical roller, spherical roller includes big-end and tip end, the outer lane internal surface have with the outer raceway of spherical roller adaptation, the inner circle surface has the interior raceway of spherical roller adaptation, spherical roller sets up between outer raceway and the interior raceway and spherical roller's tip end is to leaning out the setting radially, the tip end that interior raceway corresponds spherical roller is provided with the spacing step of contradicting with spherical roller tip end terminal surface, the tip end that corresponds spherical roller bearing between outer lane and the inner circle is provided with first sealing washer and corresponds spherical roller is provided with the second sealing washer.

2. The roller bearing of claim 1, wherein: the first sealing ring comprises a sealing framework, the inner diameter end of the sealing framework is fixedly connected with one side end face of the inner ring in an inserting mode, a first sealing lip abutted against one side end face of the inner ring is attached to the inner diameter end of the sealing framework, and a second sealing lip and a third sealing lip abutted against the outer raceway are attached to the outer diameter end of the sealing framework.

3. The roller bearing of claim 2, wherein: and a plurality of elastic sheets which can be used for being abutted against the retainer are uniformly distributed on the inner end surface of the sealing framework along the circumferential direction.

4. The roller bearing according to claim 1, 2 or 3, characterized in that: the other end terminal surface of inner circle is provided with cyclic annular slot, and the inside wall of cyclic annular slot inwards distributes in proper order along the axial has first spacing annular and the spacing annular of second, the internal diameter end of second sealing washer has along axial extension to be used for inserting cyclic annular inserted sheet in the cyclic annular slot, the lateral wall of cyclic annular inserted sheet is provided with and is used for imbedding first spacing annular or the spacing annular of second in order to form the spacing cyclic annular lug of axial, the external diameter end of second sealing washer contradicts the cooperation with outer raceway when cyclic annular lug imbeds first spacing annular, the external diameter end of second sealing washer when cyclic annular lug imbeds second spacing annular with outer raceway clearance fit.

5. The roller bearing of claim 1, wherein: the lateral wall of outer lane is provided with the oil filler point and is used for the oil plug of shutoff oil filler point, the outer lane is provided with the oil duct that is used for communicateing oil filler point and bearing inside respectively to the axial both ends of roller.