CN2294793Y - Chain bearing combination device special for rolling mill - Google Patents

Abstract

The utility model provides an interlocking bearing combination device special for rolling mills. End faces of both sides of each inner ring of each four-row of cylinder roller bearing arranged on a mill roll are fabricated with grooves. End faces of the inner ring of a self-contained bearing and the end face of a labyrinth cover in the inner side matched with the end faces of both sides of each inner ring are fabricated with bosses, causing the boss to be matched with the grooves. Thus the labyrinth cover and the inner ring of the self-contained bearing can fully synchronously rotate following the mill roll. Thereby, the service life of the mill roll, the bearing and the labyrinth cover can be extended. The utility model has the advantages of reliable work, no damage of the strength of original members, simple structure and easy application.

Description

The special-purpose interlock type bearing of milling train composite set

The utility model belongs to the manufacturing of other the extraordinary goods in the pressure processing, specifically the special-purpose interlock type bearing of milling train composite set.

At present, employed bearing on each steel rolling mill's rolling mill roll axle journal of China, four row or Biserial cylindrical roller bearing are arranged, add single-row ball-bearing or self-contained bearings such as two-row ball bearing or double-row conical bearing are installed in the bearing housing, the inner ring of bearing and inboard labyrinth lid rotate with roll, but, owing between the inboard labyrinth lid and the diameter of axle for matched in clearance has " creeping " problem, cause the end face that matches with it pernicious friction to occur.In the prior art, adopt on axle journal shell of column face, to add and put pin and cover corresponding the cooperation, so " creeping " problem also occurs with respect to four-line column roller bearing with the labyrinth.

The purpose of this utility model is to avoid above-mentioned technical deficiency part, and provides a kind of do not beat pin-and-hole on axle journal, does not weaken the intensity of associated components, only improves the special-purpose interlock type bearing of the milling train composite set of end face fit structure.

The purpose of this utility model is achieved in that the special-purpose interlock type bearing of milling train composite set, by inboard labyrinth lid 1, and four-line column roller bearing 2, self-contained bearing 4 is formed.The utility model is on the both sides end face with the inner ring 3 of bearing 2, produce groove 6, and cover on 1 end face in the labyrinth that cooperates with its end face, made boss 7 on the end face of self-contained bearing 4 inner rings 5, boss 7 on the labyrinth 1 and a side groove fit of inner ring 3, the end face boss 7 of inner ring 5 cooperates with the groove 6 of holding in addition of inner ring 3, with boss 7 and groove 6 is the matching relationship of corresponding matching relation and inner ring 3 and roll pins having, make the labyrinth cover 1, inner ring 3, inner ring 5 synchronous operations with roll rotation are eliminated labyrinth lid 1 and inner ring 5 thus and harmful end face friction that " creeping " caused and the strength problem that weakens roll pins having are occurred.Boss 7 is the cooperation that becomes corresponding with groove 6, and inner ring 3 two ends can be symmetry or asymmetry version relatively.

The utility model advantage compared with prior art is: the structure that adopts end face boss, groove to match is circumferentially rotated correlated parts and is stung tightly.Because four row cylinders roll in bearing inner race and roll pins having interference fit relation, thereby obtain labyrinth lid, bearing inner race, self-contained bearing inner ring with roll rotation fully synchronously, there is not any " creeping " problem, at first eliminated the harmful friction problem of end face, secondly roll pins having need not be beaten pin-and-hole, do not injure former component strength, improved the roll working life with this.Simple in structure, reliable operation, enforcement is easy, work efficiency is high.

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

Fig. 1 is prior art constructions figure.

Fig. 2 is overall structure figure of the present utility model.

Referring to Fig. 1,2, the special-purpose interlock type bearing of milling train composite set, by inboard labyrinth lid 1, four-line column roller bearing 2, self-contained bearing 4 is formed.The inner ring 3 of bearing 2 processes groove 6 on its both sides end face.Labyrinth lid 1 with end face that bearing 2 cooperates on made boss 7.The inner ring 5 of self-contained bearing 4, on one end, produce boss 7, interlocked in by protruding 7 end faces cooperations with groove 6, because the interference fit of inner ring 3 and roll pins having, making it does not have " creeping " between labyrinth lid 1, inner ring 5 and the bearing 2, and rotate fully synchronously in company with roll, the utility model has improved the working life of roll and associated bearings part.

Claims (2)

1, the special-purpose interlock type bearing of a kind of milling train composite set, by inboard labyrinth lid (1), four-line column roller bearing (2), self-contained bearing (4) is formed, it is characterized in that: produce groove (6) on the both sides end face of circle (3) within the bearing (2), and on labyrinth lid (1) end face that cooperates with its face, made boss (7) on the end face of circle (5) within the self-contained bearing (4), boss (7) on the labyrinth lid (1) and a side groove (6) of inner ring (3) cooperate, the groove fit of the end face boss (7) of inner ring (5) and inner ring (3) other end

2, interlock type bearing composite set according to claim 1 is characterized in that: boss (7) and groove (6) can be symmetry or asymmetry structure for becoming corresponding matching with respect to inner ring (3).

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