CN202326714U

CN202326714U - Novel four-row tapered roller bearing

Info

Publication number: CN202326714U
Application number: CN2011204560216U
Authority: CN
Inventors: 陶永刚
Original assignee: Wafangdian No1 Rolling-Mill Bearing Manufacturing Co Ltd
Current assignee: Wafangdian No1 Rolling-Mill Bearing Manufacturing Co Ltd
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-07-11
Anticipated expiration: 2021-11-16

Abstract

The utility model discloses a novel four-row tapered roller bearing. The improvement lies in that annular protrusions are formed on the outer circumferences of end faces at two sides of an annular inner space ring (63) and are limited on the outer diameters of the end parts of bearing inner races; meanwhile, two axial ends of the inner space ring are provided with conical-surface teeth with wide outer parts and narrow inner parts, from outer diameters to centers at interval; and in addition, contact ends between the inner races and the inner space ring are in smooth transition from roller limiting flanges to end parts and re in arced transition from the roller limiting flanges to inner-diameter hole of the inner races. According to the utility model, a teethed hole of the inner space ring is changed into a tapered hole with the angle consistent with that of small flanges of the inner races of dual rollaways, and thus, the inner space ring can be directly hung on the small flanges of the inner races of the dual conical rollaways so as to fundamentally solve a problem existing in an original structure, enhance the strength of the small flanges, reduce a procedure of an end-face toothed hole of the inner races of the dual conical rollaways, increase the rigidity of the bearing inner races and prolong the service of the bearing. According to the utility model, the labor intensity is reduced, the production efficiency is increased and the manufacture cost is reduced.

Description

Novel four-row tapered roller bearing

Technical field

The invention belongs to technical field of bearings, more particularly, relate to a kind of novel four-row tapered roller bearing of architecture advances.

Background technique

In field of bearings, four-row tapered roller bearing is widely used, and shown in Fig. 1-3, two raceway inner ring both ends of the surface of four-row tapered roller bearing have the age of a draught animal of hanging cone spacer, use till today for a long time always.But, the demands for bearing capacity of bearing is all being improved constantly the raising of bearing dynamic load along with the continuous development of bearing technology; Will inevitably start with from the rotary joint circular diameter of the diameter of rolling element, length, rolling element, the size that roller size lengthening will inevitably dwindle little rib, on little rib, add one hang cone spacer the age of a draught animal; Will influence the intensity of little rib; In quenching, carry, using, little rib will occur and damage because of intensity is little, cause bearing to lose efficacy in advance.

Summary of the invention

The object of the present invention is to provide a kind of can be simple in structure, easy to use, and can increase bearing intensity, the novel four-row tapered roller bearing that increases the service life.

In order to achieve the above object; A kind of novel four-row tapered roller bearing of the present invention; Comprise two and the inner ring of putting, the outer ring, middle part of a middle part setting and the limit portion outer ring that both sides are provided with respectively, and between the outer ring four-row tapered roller is set at said inner ring and outer ring, middle part, limit portion; Wherein, be provided with cone spacer between the said inner ring, outer ring, said middle part, limit portion are provided with outer ring spacer between the outer ring, and the external diameter middle part of said outer ring spacer and outer ring, said middle part offers oil hole.Wherein, said cone spacer is a ring-type, and the outer circumferential of the both sides end face of said ring-type cone spacer is protruding circlewise, and said convexity is limited on the external diameter of said inner ring end; The narrow conical surface teeth of outer width are offered at interval by the outer radial center in the axial two ends of said cone spacer simultaneously, and face angle β is 45 °; And the end-beveling α of teeth is 45 °; Square groove is offered in said teeth root inboard.In addition, the contact jaw of said inner ring and said cone spacer seamlessly transits to the end and arcuation transits to the internal diameter aperture place of inner ring from the spacing rib of roller.

The invention has the advantages that; Cancelled the age of a draught animal of the two raceway inner rings of four-row tapered roller under the existing technology; Make the age of a draught animal of cone spacer into taper hole, the angle of this taper hole is consistent with the angle of two little ribs of raceway inner ring, and cone spacer will directly hang on the little rib of the two raceway inner rings of circular cone like this.The present invention has fundamentally solved the problem that original structure exists through after the improvement to cone spacer, has solved the intensity of little rib, has reduced the end face age of a draught animal operation of the two raceway inner rings of circular cone, has improved the rigidity of bearing inner race, has prolonged bearing working life.Reduced labor intensity, manufacturing efficiency is improved, and has reduced manufacture cost.

Description of drawings

Fig. 1 is a four-row tapered roller bearing assembling schematic representation under the existing technology;

Fig. 2 is a four-row tapered roller bearing cone spacer structural representation under the existing technology;

Fig. 3 be among Fig. 2 A-A to the side-looking structural representation;

Fig. 4 is a four-row tapered roller bearing assembling schematic representation of the present invention;

Fig. 5 is a four-row tapered roller bearing cone spacer structural representation of the present invention;

Fig. 6 be among Fig. 5 B-B to the side-looking structural representation.

Embodiment

Novel four-row tapered roller bearing shown in Fig. 4-6 comprises two and the inner ring of putting, the outer ring, middle part of a middle part setting and the limit portion outer ring that both sides are provided with respectively, and between the outer ring four-row tapered roller is set at said inner ring and outer ring, middle part, limit portion.Wherein, be provided with cone spacer 63 between the said inner ring, outer ring, said middle part, limit portion are provided with outer ring spacer between the outer ring, and the external diameter middle part of said outer ring spacer and outer ring, said middle part offers oil hole.

The present invention improves and is that said cone spacer 63 is a ring-type, and the outer circumferential of the both sides end face of said ring-type cone spacer 63 is protruding circlewise, and said convexity is limited on the external diameter of said inner ring 22 ends; The narrow conical surface teeth of outer width are offered at interval by the outer radial center in said cone spacer 63 axial two ends simultaneously, and face angle β is 45 °; And the end-beveling α of teeth is 45 °; Square groove is offered in said teeth root inboard.In addition, the contact jaw of said inner ring 22 and said cone spacer 63 seamlessly transits to the end and arcuation transits to the place, internal diameter aperture of inner ring 22 from the spacing rib of roller.

Two raceway inner ring 22 both ends of the surface of the novel four-row tapered roller bearing of the present invention are equipped with cone spacer 63, and cone spacer 63 is provided with the installation taper hole, and said taper hole angle beta is consistent with two little rib angle [alpha] of raceway inner ring.The cone spacer both sides taper hole that is crisscross arranged.Taper hole angle beta and two raceway inner ring angle [alpha] are 45 °.The invention has the advantages that; Cancelled the age of a draught animal of the two raceway inner rings of four-row tapered roller under the existing technology; Make the age of a draught animal of cone spacer into taper hole, the angle of this taper hole is consistent with the angle of two little ribs of raceway inner ring, and cone spacer will directly hang on the little rib of the two raceway inner rings of circular cone like this.The present invention has fundamentally solved the problem that original structure exists through after the improvement to cone spacer, has solved the intensity of little rib, has reduced the end face age of a draught animal operation of the two raceway inner rings of circular cone, has improved the rigidity of bearing inner race, has prolonged bearing working life.Reduced labor intensity, manufacturing efficiency is improved, and has reduced manufacture cost.

The above; Be merely the preferable structure embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technological scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.

Claims

1. a novel four-row tapered roller bearing comprises two and the inner ring of putting, the outer ring, middle part of a middle part setting and the limit portion outer ring that both sides are provided with respectively, and between the outer ring four-row tapered roller is set at said inner ring and outer ring, middle part, limit portion; Wherein, be provided with cone spacer (63) between the said inner ring, outer ring, said middle part, limit portion are provided with outer ring spacer between the outer ring, and the external diameter middle part of said outer ring spacer and outer ring, said middle part offers oil hole, it is characterized in that;

Said cone spacer (63) is a ring-type, and the outer circumferential of the both sides end face of said ring-type cone spacer (63) is protruding circlewise, and said convexity is limited on the external diameter of said inner ring end; Said cone spacer (63) is axially offered the narrow conical surface teeth of outer width by the outer radial center in two ends at interval simultaneously, and face angle β is 45 °; And the end-beveling α of teeth is 45 °; Square groove is offered in said teeth root inboard;

The contact jaw of said in addition inner ring and said cone spacer (63) seamlessly transits to the end and arcuation transits to the internal diameter aperture place of inner ring from the spacing rib of roller.