CN205173226U

CN205173226U - Cylindrical roller bearing suitable for major axis

Info

Publication number: CN205173226U
Application number: CN201520939851.2U
Authority: CN
Inventors: 周军
Original assignee: Changzhou CRONOS Special Bearing Manufacture Co Ltd
Current assignee: Changzhou CRONOS Special Bearing Manufacture Co Ltd
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2016-04-20
Anticipated expiration: 2025-11-23

Abstract

The utility model relates to a cylindrical roller bearing suitable for major axis, including outer lane and inner circle, the inner circle sets up in the outer lane, form the raceway between the outer wall of inner circle and the outer lane inner wall, be provided with a plurality of cylindrical roller in the raceway, the raceway becomes the outer curved surface of round evagination at the outer lane of inner circle shape of face, the raceway forms the round slot rolling on the inner circle face of outer lane, the tank bottom face of slot rolling is the incurvated face of round evagination, cylindrical roller is located between outer curved surface and the incurvated face. Having not centering ability of 2 -3 adaptation doubly, being adapted to the major axis, the amount of deflection is big, can bear the disalignment degree and add the amount of deflection, can make the inner circle of bearing and outer lane take place 8 / slope to can satisfy the thermal expansion displacement demand of major axis free end.

Description

Be applicable to the roller bearing of major axis

Technical field

The utility model relates to a kind of roller bearing being applicable to major axis.

Background technique

At metallurgy industry, need to use casting machine, because roll is long, cause axle can there is certain camber when rotation, in the past common roller bearing can only bear the amount of deflection error of 2.5 ', inner ring and outer ring damage easily to bearing when causing major axis to be that plain bearing coordinates.

And because major axis is longer, the two ends that plain bearing is arranged on major axis support major axis, the bearing of major axis one end is positioning end, the bearing of the major axis the other end is movable end, along with major axis expanded by heating, the movable end of major axis needs realize axially moving freely, but bearing in the past can not meet.

Model utility content

The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provides a kind of roller bearing being applicable to major axis, solves the defect that bearing in the past can not adapt to major axis inclination.

The utility model solves the technological scheme that its technical problem adopts: a kind of roller bearing being applicable to major axis, comprise outer ring and inner ring, described inner ring is arranged in outer ring, forms raceway, be provided with some cylindrical rollers in described raceway between the outer wall of described inner ring and outer ring inwall;

Described raceway forms the positive camber of a circle evagination in the face, outer ring of inner ring, described raceway forms a circle slot rolling on the inner ring face of outer ring, and the groove bottom of described slot rolling is the negative camber of a circle evagination, and described cylindrical roller is between positive camber and negative camber.

Further, the interior ring outer wall at described positive camber two ends is respectively arranged with back-up ring, leaves between the end face of described back-up ring distance cylindrical roller and move axially gap.

Further, the subsequent corrosion of described positive camber and negative camber is R2500mm ~ R6000mm.

Further, the interior ring outer wall at described positive camber two ends offers draw-in groove respectively, and described back-up ring is connected in draw-in groove.

Further, be provided with retainer in described raceway, each described cylindrical roller is arranged on retainer.

The beneficial effects of the utility model are: have 2-3 adaptation doubly and misalign ability, can be adapted to major axis, amount of deflection is large, can bear malalignment and add amount of deflection, can make the inner ring of bearing and outer ring that the inclination of 8 ' occurs, and the thermal expansion curve demand of major axis free end can be met.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is the schematic diagram of the utility model bearing;

Fig. 2 is the schematic diagram of the utility model bearing inner race;

Fig. 3 is the enlarged view at A place in Fig. 2;

Fig. 4 is the schematic diagram of the utility model bearing outer ring;

Fig. 5 is the enlarged view at B place in Fig. 4;

Fig. 6 is the schematic diagram of back-up ring;

Wherein, 1, outer ring, 2, inner ring, 3, cylindrical roller, 4, back-up ring, 11, negative camber, 21, positive camber.

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.

As shown in Figures 1 to 6, a kind of roller bearing being applicable to major axis, comprises outer ring 1 and inner ring 2, and inner ring 2 is arranged in outer ring 1, forms raceway, be provided with some cylindrical rollers 3 in raceway between the outer wall of inner ring 2 and outer ring 1 inwall.For improving the stability that cylindrical roller 3 moves, be provided with retainer in raceway, each cylindrical roller is arranged on retainer.

Raceway forms the positive camber 21 of a circle evagination in the face, outer ring of inner ring 2, raceway forms a circle slot rolling on the inner ring face of outer ring 1, and the groove bottom of slot rolling is the negative camber 11 of a circle evagination, and cylindrical roller 3 is between positive camber 21 and negative camber 11.Cylindrical roller 3 is also placed in slot rolling simultaneously.As preferably, the subsequent corrosion of positive camber 21 and negative camber 11 is R2500mm ~ R6000mm.

Inner ring 2 outer wall at positive camber 21 two ends is respectively arranged with back-up ring 4, and inner ring 2 outer wall at positive camber 21 two ends offers draw-in groove respectively, and back-up ring 4 is connected in draw-in groove.

Leave between the end face of back-up ring 4 apart from cylindrical roller 3 and move axially gap.This moves axially gap and major axis can be made to have when expanded by heating sufficient move axially gap, avoided major axis to expand and damage bearing.

When major axis is connected in inner ring 2, thus drive inner ring 2 downward-sloping near major axis one end, owing to relying on the positive camber 21 of inner ring 2 and the negative camber 11 of outer ring 1, thus make cylindrical roller 3 in raceway, have one to allow bit space, and along with the inclination of inner ring 2, positive camber 21 and cylindrical roller 3 surface contact of inner ring 2 outer wall, negative camber 11 and cylindrical roller 3 surface contact of outer ring 1, thus add area of contact, improve inner ring 2 working strength within the bearing.

With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.

Claims

1. one kind is applicable to the roller bearing of major axis, it is characterized in that, comprise outer ring (1) and inner ring (2), described inner ring (2) is arranged in outer ring (1), form raceway between the outer wall of described inner ring (2) and outer ring (1) inwall, in described raceway, be provided with some cylindrical rollers (3);

Described raceway forms the positive camber (21) of a circle evagination in the face, outer ring of inner ring (2), described raceway forms a circle slot rolling on the inner ring face of outer ring (1), the groove bottom of described slot rolling is the negative camber (11) of a circle evagination, and described cylindrical roller (3) is positioned between positive camber (21) and negative camber (11).

2. the roller bearing being applicable to major axis according to claim 1, it is characterized in that, inner ring (2) outer wall at described positive camber (21) two ends is respectively arranged with back-up ring (4), leaves between the end face of described back-up ring (4) distance cylindrical roller (3) and move axially gap.

3. the roller bearing being applicable to major axis according to claim 1, is characterized in that, the subsequent corrosion of described positive camber (21) and negative camber (11) is R2500mm ~ R6000mm.

4. the roller bearing being applicable to major axis according to claim 2, is characterized in that, inner ring (2) outer wall at described positive camber (21) two ends offers draw-in groove respectively, and described back-up ring (4) is connected in draw-in groove.

5. the roller bearing being applicable to major axis according to claim 1, is characterized in that, is provided with retainer in described raceway, and each described cylindrical roller (3) is arranged on retainer.