CN202212410U

CN202212410U - Full complement cylindrical roller bearing for rolling mill

Info

Publication number: CN202212410U
Application number: CN2011203207829U
Authority: CN
Inventors: 宋晓梅; 任志翔; 赵健
Original assignee: ZHENJIANG FEIYA BEARING CO Ltd
Current assignee: ZHENJIANG FEIYA BEARING CO Ltd
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-05-09
Anticipated expiration: 2021-08-30

Abstract

The utility model discloses a full complement cylindrical roller bearing for a rolling mill, which comprises an outer ring, two inner rings, a plurality of rolling elements and a fixing ring, wherein the two inner rings are arranged in inner holes of the outer ring side by side. An intermediate flange is arranged in the middle of an inner rolling path of the outer ring to divide the inner rolling path of the outer ring into double rolling paths, an outer flange and an inner flange are arranged on two sides of each outer rolling path of the two inner rings respectively, two half clamp grooves are arranged on adjacent end faces of the two inner rings respectively and spliced into a clamp groove, and the fixing ring is embedded into the clamp groove. The double rolling paths of the outer ring and the outer rolling paths of the two inner rings form double-row annular rolling paths respectively, the rolling elements are arranged in the double-row annular rolling paths in a full-complement manner, two ends of the lower side of each rolling element are positioned by the outer flange and the inner flange of each inner ring respectively, and one end of the upper side of each rolling element is abutted to the intermediate flange of the outer ring. The full complement cylindrical roller bearing for the rolling mill is capable of bearing larger axial load, simple in structure and convenient in assembly, the axial wear of the inside of the bearing is less, antirust and lubricating effects of the bearing are better, the bearing is not easy to rust and fail, and the service life of the bearing is greatly prolonged.

Description

The full-complement cylinder roller rolling mill bearing

Technical field

The utility model relates to a kind of rolling mill bearing, and especially a kind of double-row full-complement cylinder roller rolling mill bearing belongs to technical field of bearings.

Background technology

Rolling mill bearing is supported on the two ends of rolling mill roll, is used for back up roll and keeps the fixed position of roll in frame, and the environment temperature around the milling train is than higher, work under bad environment; During the roll rolled plate, the rolling mill bearing at two ends bears bigger live load.Existing rolling mill bearing rolling element is the double-row full-complement cylinder; Contacting of rolling element and raceway is the line contact; During rolled plate, rolling element also bears certain axial additional load when bearing big radial load, for reducing the inner axial wearing and tearing of bearing; Guarantee the working life of bearing, generally allowing to comprise between bearing inner race assembly and the outer ring of rolling element has certain axial relative shift.As shown in Figure 1, raceway one side is provided with single block border 11 in the existing rolling mill bearing outer ring 1, and the raceway opposite side is provided with rigidity locating snap ring 12 in the outer ring 1; Spacing between single block border 11 and the rigidity locating snap ring 12 is greater than the axial overall width of rolling element in the inner ring assembly 3; The stand out of the two is the axial relative shift of the inside and outside circle of bearing, though this frame mode is convenient to bearing assembling, receives the restriction of rigidity locating snap ring 12 self intensity and the assembling draw-in groove degree of depth; Bearing receives larger axis to load especially larger axis during to shock loading; Rigidity locating snap ring 12 easy damages that are installed in the bearing outer ring draw-in groove come off, and lose its stopping function, thereby make bearing failure.

Summary of the invention

The purpose of the utility model provide a kind of simple in structure, easy to assembly, axially wear and tear little, can bear the full-complement cylinder roller rolling mill bearing of larger axis to load.

The utility model is achieved through following technical scheme:

A kind of full-complement cylinder roller rolling mill bearing comprises the outer ring, is arranged side by side two inner rings in the endoporus of outer ring, a plurality of rolling element, retainer ring; Rib in the middle of middle raceway is provided with in the said outer ring is separated into two raceways with raceway in the outer ring; The outer raceway both sides of said two inner rings are respectively equipped with outer rib, inner retaining side, are respectively equipped with half draw-in groove on two inner ring adjacent faces, and two and half draw-in grooves piece together draw-in groove, and retainer ring is inlaid on the said draw-in groove, and two inner rings are fixedly connected; The two raceways in outer ring form biserial ring-type raceway with the outer raceway of two inner rings respectively; A plurality of rolling elements evenly completely are installed in the biserial ring-type raceway respectively; Rolling element downside two ends are respectively through outer rib of inner ring and inner retaining side location; Rolling element upside one end is resisted against on the middle rib in outer ring, and the spacing a between the two row rolling element sides adjacent is greater than the width b of middle rib.

The purpose of the utility model can also further realize through following technical measures.

Aforesaid full-complement cylinder roller rolling mill bearing; The outer rib outer peripheral face of wherein said inner ring is provided with seal groove; Inner ring inner retaining side end face is along circumferentially evenly being interval with several radially oil grooves, corresponding several oilhole I that form in the radially oil groove position of two inner ring inner retaining side end faces.

Aforesaid full-complement cylinder roller rolling mill bearing, the shape of wherein said retainer ring and draw-in groove coincide, and the retainer ring middle part is along circumferentially evenly being interval with several oilhole II.

Aforesaid full-complement cylinder roller rolling mill bearing, the spacing a between the wherein said two row rolling element inboards is than the big 1.05mm～1.15mm of width b of middle rib.

Rib in the middle of the utility model middle raceway in the outer ring is provided with; Adopt the version of two inner rings simultaneously; Spacing between the two row rolling element inboards is greater than the width of middle rib; Make between outer ring and the inner ring assembly when producing axial relative displacement to load when bearing bears larger axis, middle rib can carry out axial limiting to inner ring assembly, and the inside and outside circle of bearing can not come off each other; The utility model is simple in structure, and is easy to assembly, and the bearing inner shaft is little to wearing and tearing, antirust and high lubricating effect, and bearing is difficult for corrosion and lost efficacy, and has prolonged the service life of bearing greatly.

Advantage of the utility model and characteristics will illustrate through the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide with reference to accompanying drawing as an example.

Description of drawings

Fig. 1 is the structural representation of existing full-complement cylinder roller rolling mill bearing;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the side view of the utility model inner ring.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Like Fig. 2, shown in Figure 3, the utility model comprises outer ring 1, is arranged side by side two inner rings 2, a plurality of rolling element 3, retainer ring 4 in 1 endoporus of outer ring; Rib 13 in the middle of the middle raceway convexity in the outer ring 1 is separated into two raceways with raceway in the outer ring 1; Two inner ring 2 outer raceway both sides are respectively equipped with and are respectively equipped with 231, two half draw-in grooves 231 of half draw-in groove on outer rib 21,22, two inner ring 2 adjacent faces of inner retaining side and piece together draw-in groove 23.Original columniform retainer ring 4 is inlaid on the draw-in groove 23 through the big shape in little two ends, stage casing that roll extrusion formation and draw-in groove 23 coincide, and two inner rings 2 is fixedly connected be integral; Inner ring 2 outer rib 21 outer peripheral faces are provided with the seal groove 24 that is used to install sealing ring; Inner ring 2 inner retaining sides 22 end faces form 5 oilhole I 26 along circumferentially evenly being interval with 5 radially radially oil groove 25 positions correspondences of 25, two inner rings of oil groove, 2 inner retaining sides, 22 end faces; Retainer ring 4 strikes out the column annulus through steel plate; The center makes the bearing internal lubrication more abundant, favorable rust preventing effect along circumferentially evenly being interval with 6 oilhole II 41; Bearing is difficult for corrosion and lost efficacy, and has prolonged the service life of bearing greatly.

The 1 pair of raceway in outer ring forms biserial ring-type raceway with two inner rings, 2 outer raceways respectively; A plurality of rolling elements 3 evenly completely are installed in the biserial ring-type raceway respectively; Rolling element 3 inner both sides are respectively through inner ring 2 outer ribs 21 and inner retaining side 22 location; Inboard, left column rolling element 3 outer end is resisted against on the middle rib 13 in outer ring; Spacing a between two row rolling elements, 3 inboards is than the big 1.05mm～1.15mm of width b of middle rib 13, and this stand out is the axial relative shift between the inside and outside circle of bearing, allows the axially a small amount of string of rolling element 3 moving.

Except that the foregoing description, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. a full-complement cylinder roller rolling mill bearing is characterized in that: comprise the outer ring, be arranged side by side two inner rings in the endoporus of outer ring, a plurality of rolling element, retainer ring; Rib in the middle of middle raceway is provided with in the said outer ring is separated into two raceways with raceway in the outer ring; The outer raceway both sides of said two inner rings are respectively equipped with outer rib, inner retaining side, are respectively equipped with half draw-in groove on two inner ring adjacent faces, and two and half draw-in grooves piece together draw-in groove, and retainer ring is inlaid on the said draw-in groove, and two inner rings are fixedly connected; The two raceways in outer ring form biserial ring-type raceway with the outer raceway of two inner rings respectively; A plurality of rolling elements evenly completely are installed in the biserial ring-type raceway respectively; Rolling element downside two ends are respectively through outer rib of inner ring and inner retaining side location; Rolling element upside one end is resisted against on the middle rib in outer ring, and the spacing a between the two row rolling element sides adjacent is greater than the width b of middle rib.

2. full-complement cylinder roller rolling mill bearing as claimed in claim 1; It is characterized in that: the outer rib outer peripheral face of said inner ring is provided with seal groove; Inner ring inner retaining side end face is along circumferentially evenly being interval with several radially oil grooves, corresponding several oilhole I that form in the radially oil groove position of two inner ring inner retaining side end faces.

3. full-complement cylinder roller rolling mill bearing as claimed in claim 1 is characterized in that: the shape of said retainer ring and draw-in groove coincide, and the retainer ring middle part is along circumferentially evenly being interval with several oilhole II.

4. full-complement cylinder roller rolling mill bearing as claimed in claim 1 is characterized in that: the spacing a between the said two row rolling element inboards is than the big 1.05mm～1.15mm of width b of middle rib.