CN212509222U - A kind of linear bearing for scraper in drying section of paper machine - Google Patents

Abstract

The utility model belongs to the technical field of the bearing, concretely relates to a linear bearing for scraper of paper machine drying part, including bearing inner race, holder, a plurality of balls, bearing middle ring and bearing outer lane, a plurality of balls are evenly embedded on the holder, and are equipped with the interval between two pairs of balls, the holder is arranged between bearing inner race and bearing middle ring, and the surface of a plurality of balls is in rolling fit with bearing inner race, bearing middle ring, the surface of bearing middle ring is provided with the convex outer sphere, the inner surface of bearing outer lane is provided with the inner groove face in transition fit with the outer sphere, the inner groove face includes the straight section and the bending section that connect gradually; the utility model discloses the whole quiet/dynamic load that can bear of linear bearing is all higher, through insert surface and the cooperation of inner groove face between ring and the bearing inner race in the bearing, can overcome the amount of deflection that the dead weight produced by automatic aligning during the use, and linear bearing holistic life is longer, and then has guaranteed the normal function of paper machine.

Description

Linear bearing for scraper of drying part of paper machine

Technical Field

The utility model belongs to the technical field of the bearing, specifically relate to a linear bearing that is used for paper machine stoving portion scraper.

Background

The linear bearing for the scraper of the drying part of the paper machine in the prior art is characterized in that a ball retainer is fixed on the inner surface of an outer ring of the bearing and is made of rubber, the linear bearing is easy to deform in a high-temperature environment of the drying part of the paper machine and is tightly arranged, and the linear reciprocating motion of the balls is realized by mutually extruding the balls by means of the grinding force generated when the scraper moves linearly in the axial direction, so that the ball retainer is easy to be extruded in the using process, and the whole linear bearing can bear smaller static/dynamic load, so that the service life is shorter, and the normal operation of the paper machine can be influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a linear bearing for paper machine drying part scraper.

The content of the utility model is a linear bearing for paper machine stoving portion scraper, this linear bearing includes the bearing inner circle, the holder, a plurality of ball, circle and bearing inner race in the bearing, a plurality of ball evenly inlays and establishes on the holder, and be equipped with the interval between two liang of balls, the holder sets up between bearing inner circle and bearing inner race, and the surface and the bearing inner circle of a plurality of balls, circle roll fit in the bearing, be provided with on the surface of circle in the bearing and be bellied ectosphere, set up on the internal surface of bearing inner race with ectosphere transition fit's inner groove face, the inner groove face is including the straight section and the bending section that connect gradually.

Furthermore, the material of the retainer is copper.

Furthermore, the diameter of the ball is larger than the thickness of the retainer, a gap is reserved between the inner surface of the retainer and the outer surface of the bearing inner ring, and gaps are reserved between the outer surface of the retainer and the inner surface of the bearing inner ring respectively.

Furthermore, oil injection holes are formed in the bearing middle ring and the bearing outer ring.

Furthermore, the upper edge of the bending section is gradually bent downwards from the end connected with the straight section to the end far away from the straight section, and the radian of the bending section is matched with that of the outer spherical surface.

The beneficial effects of the utility model are that, the material of holder is copper, can be high temperature resistant, also indeformable under the high temperature environment of paper machine drying part, the ball inlays to be established in the holder, contactless between the ball, leave the clearance between holder and bearing inner race and the bearing inner race, be difficult for crowded bad holder in the use, also can not extrude each other between the ball, the whole quiet/that can bear of linear bearing moves and cuts the load all higher, cooperate through ectosphere and inner groove face between circle and the bearing inner race in the bearing, but the amount of deflection that the dead weight produced is overcome to automatic aligning during the use, linear bearing holistic life is longer, and then the normal function of paper machine has been guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:

the attached drawing is the structure schematic diagram of the utility model.

Fig. 1 is the utility model provides a pair of a linear bearing's for paper machine stoving portion scraper structural sketch map.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in the accompanying drawing 1, the utility model provides a linear bearing for paper machine drying part scraper, circle 40 and bearing inner race 50 in bearing inner circle 10, holder 20, a plurality of ball 30, the bearing, the utility model discloses well preferred holder 20's material is copper, can be high temperature resistant, also indeformable under paper machine drying part's high temperature environment to life has been prolonged.

The retainer 20 is provided with a plurality of mounting holes for embedding the balls 30, and a space is arranged between every two mounting holes, so that when the balls 30 are uniformly embedded on the retainer 20, a space is reserved between every two balls 30, namely, the balls 30 are not in contact with each other, the retainer 20 is not easily damaged by extrusion in the use process, the retainer 20 is arranged between the bearing inner ring 10 and the bearing middle ring 40, and the surfaces of the balls 30 are in rolling fit with the bearing inner ring 10 and the bearing middle ring 40. The utility model discloses in, ball 30's diameter is greater than holder 20's thickness, when making ball 30 inlay to establish on holder 20, ball 30 surface salient outside holder 20 internal surface and surface, consequently at ball 30 surface and bearing inner race 10, during the rolling cooperation of circle 40 in the bearing, leave the clearance between the internal surface of holder 20 and the surface of bearing inner race 10, leave the clearance between the surface of holder 20 and the internal surface of circle 40 in the bearing respectively, consequently, holder 20 is difficult to be crowded bad in the use, holistic life has been prolonged. When the scraper moves linearly back and forth in the axial direction and lifts up or closes to rotate, the balls 30 are driven by the retainer 20 to move or rotate, and the balls 30 cannot be squeezed with each other.

The outer surface of the bearing middle ring 40 is provided with a convex outer spherical surface 41, the inner surface of the bearing outer ring 50 is provided with an inner groove surface 51 in transition fit with the outer spherical surface 41, after the bearing outer ring 50 and the bearing middle ring 40 are installed, the outer spherical surface 41 is positioned in the inner groove surface 51, and the inner groove surface 51 comprises a straight section 511 and a bending section 512 which are connected in sequence. One end of the bending section 512, which is far away from the straight section 511, is bent downwards, that is, the upper edge of the bending section 512 is connected with one end of the straight section 511 to one end, which is far away from the straight section 511, of the bending section 511, the curvature of the bending section 512 is gradually bent downwards, the curvature of the bending section 512 is matched with the curvature of the outer spherical surface 41, after the bearing outer ring 50 and the bearing inner ring 40 are installed, the outer spherical surface 41 is located in the inner groove surface 51, and the bending section 512 is attached to the outer spherical surface 41. The outer spherical surface 41 is arranged on the outer surface of the bearing middle ring 40, the inner groove surface 51 is arranged on the inner surface of the bearing outer ring 50, the bearing middle ring 40 is matched with the bearing outer ring 50 through the outer spherical surface 41 and the inner groove surface 51, when the linear bearing is used, the self-aligning can be automatically performed to overcome the deflection generated by self-weight, and therefore the service life of the whole linear bearing is prolonged, and the oil injection holes 60 are formed in the bearing middle ring 40 and the bearing outer ring 50.

The utility model provides a linear bearing for scraper of paper machine drying part, the material of holder 20 is copper, can be high temperature resistant, also can not yielding under the high temperature environment of paper machine drying part, ball 30 inlays and establishes in holder 20, leave the interval between two liang of balls 30, namely there is not contact between ball 30, leave the clearance between holder 20 and bearing outer lane 50 and the bearing inner lane 10, be difficult for crowded bad holder 20 in the use, when the scraper lifts up or closed does rotary motion, all drive ball 30 through holder 20 and remove or rotate, also can not extrude each other between ball 30, the static/dynamic load that wholly can bear is all higher than original linear bearing, cooperate through ectosphere 41 and inner groove face 51 between bearing middle lane 40 and the bearing outer lane 50, can automatic aligning overcomes the amount of deflection that the dead weight produced during the use, and then lengthened linear bearing holistic life, thereby ensuring the normal operation of the paper machine.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (5)

1. A linear bearing for a scraper in a drying section of a paper machine, characterized in that it comprises an inner ring of a bearing, a cage, several balls, a middle ring of the bearing and an outer ring of the bearing, and some of the balls are evenly embedded on the cage , and there is an interval between the two balls, the cage is arranged between the inner ring of the bearing and the middle ring of the bearing, and the surfaces of a number of the balls are in rolling fit with the inner ring of the bearing and the middle ring of the bearing, and the middle ring of the bearing is in rolling fit. The outer surface of the bearing outer ring is provided with a convex outer spherical surface, and the inner surface of the outer ring of the bearing is provided with an inner groove surface which is transitionally matched with the outer spherical surface, and the inner groove surface includes a straight section and a curved section connected in sequence. 2 . The linear bearing for the scraper in the drying section of a paper machine according to claim 1 , wherein the material of the cage is copper. 3 . 3. The linear bearing for a scraper in a drying section of a paper machine according to claim 1, wherein the diameter of the ball is greater than the thickness of the cage, the inner surface of the cage and the outer surface of the bearing inner ring There are gaps between them, and gaps are respectively left between the outer surfaces of the cage and the inner surfaces of the bearing middle ring. 4 . The linear bearing used for the scraper in the drying section of a paper machine according to claim 1 , wherein oil injection holes are provided on the bearing middle ring and the bearing outer ring. 5 . 5. The linear bearing used for the scraper in the drying section of a paper machine according to claim 1, wherein the upper part of the curved section is gradually bent downward along the end connecting the straight section to the end away from the straight section, And the radian of the curved segment matches the radian of the outer spherical surface.

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