CN215171592U - Bearing stamping retainer structure for working roll - Google Patents

Abstract

The utility model discloses a bearing punching press holder structure for working roll, including bearing housing, holder, roller, bearing inner shell, oil inlet and car limit, the holder rotates to be installed outside the bearing inner shell, because the fenestra of punching press holder adopts the press punching press to accomplish, according to the difference of bearing size, the thickness of the holder of chooseing for use the steel sheet is 3-10mm, except that having special requirements, the depth of slope of fenestra, influence the position of fenestra parcel rolling element, rolling element and holder contact site will be in the transition position nearer with the fenestra from holder slope, if the shrinkage is big, then the contact site of rolling element and holder can be in the transition position of slope and fenestra, the phenomenon that the holder cliied the rolling element can appear in the bearing rotation process, cause the abnormal wear of holder fenestra, lead to the grow, thereby causing the temperature rise and noise of the bearing to increase, and the position of the window hole after shrinkage is more suitable at the position of 0.6-0.7 of the diameter of the end surface of the roller.

Description

Bearing stamping retainer structure for working roll

Technical Field

The utility model relates to a bearing retainer field specifically is a bearing punching press holder structure for working roll.

Background

A four-row tapered roller bearing retainer for a rolling mill is a common structural form, a radial clearance A1 between the large end face of the retainer and a space ring is usually small, a clearance is reserved between a bearing box and the space ring, and displacement exists in the radial direction. As the bearing rotates in operation, the middle ring deflects to one side under the action of centrifugal force, and as the service life increases, the size of the window hole of the retainer also becomes larger, so that the play of the retainer in the radial direction also increases, and therefore, the distance of a1 in the figure becomes smaller, and in severe cases, the two can be in direct contact with each other, as shown in the following figures: if the outer diameter of the large end of the retainer is contacted with the middle spacer ring, the retainer and the middle spacer ring can be quickly worn; because the clearance between the retainer and the outer ring raceway is small, the displacement of the abraded retainer window hole is increased, the rotating noise of the bearing is increased, the mutual friction between the outer ring raceway and the retainer is intensified, the phenomenon of clamping a rolling body possibly occurs, and the temperature of the bearing is increased. The occurrence of the conditions can cause the bearing to have early failure, and the normal production is influenced. For the above reasons, we have improved and optimized such cages.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bearing punching press holder structure for work roll to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a bearing stamping retainer structure for a working roll comprises a bearing outer shell, a retainer, a roller, a bearing inner shell, an oil inlet and a turning edge, wherein the retainer is rotatably arranged outside the bearing inner shell, and the thickness of the retainer of a steel plate is 3-10 mm; the retainer is provided with a plurality of rectangular through holes, and the rollers are arranged in the plurality of rectangular through holes of the retainer in a rolling manner.

As a further aspect of the present invention: the thickness of the retainer is selected to be 0.5-3 mm.

As a further aspect of the present invention: the edge turning device is characterized in that a turning edge is arranged on one side of the retainer, the length of the turning edge is =2-4mm, the height of the turning edge is =3mm, and the bearing shell is installed on the retainer in a rolling mode through rollers.

As a further aspect of the present invention: an oil inlet is formed in the middle of one side of the bearing shell.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the increase of fenestra width is favorable to forming the oil film between bearing rolling element and the holder, reduces frictional force between the two, and the bearing operation is nimble, and has increased the car limit, and better messenger's holder avoids the contact with well space ring like this.

Drawings

FIG. 1 is a schematic structural view of a structure of a bearing press-fit retainer for a work roll.

FIG. 2 is a schematic view showing a structure of a retainer in a structure of a work roll bearing press retainer.

In the figure: the bearing comprises a bearing outer shell 1, a retainer 2, rollers 3, a bearing inner shell 4, an oil inlet 5 and a turning edge 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, in an embodiment of the present invention, a bearing stamping holder structure for a work roll includes a bearing outer shell 1, a holder 2, a roller 3, a bearing inner shell 4, an oil inlet 5, and a rim 6.

The retainer 2 is rotatably arranged outside the bearing inner shell 4, the window hole of the stamped retainer is stamped by a press, the thickness of the retainer made of steel plates is 3-10mm according to different sizes of bearings, special requirements are eliminated, the slope pressing depth of the window hole influences the position of the window hole wrapping the rolling body, the slope pressing depth is increased to 0.15-0.2mm, the slope pressing included angle is 45 degrees, the width of the window hole is increased, an oil film is formed between the bearing rolling body and the retainer, the friction force between the bearing rolling body and the retainer is reduced, and the bearing is flexible to operate.

The retainer 2 is provided with a plurality of rectangular through holes, the rollers 3 are arranged in a plurality of square holes formed in the retainer 2 in a rolling manner, the contact parts of the rolling bodies and the retainer are positioned at the positions close to the transition parts of the pressure slopes and the window holes of the retainer, if the shrinkage is large, the contact parts of the rolling bodies and the retainer are positioned at the transition parts of the pressure slopes and the window holes, the phenomenon that the retainer clamps the rolling bodies can occur in the rotating process of the bearing, abnormal abrasion of the window holes of the retainer is caused, the window holes are enlarged, temperature rise and noise of the bearing are increased, the positions of the window holes after shrinkage are proper at 0.6-0.7 part of the diameter of the end faces of the rollers, and the rolling bodies are ensured to be in contact with the middle parts of the window hole pressure slope surfaces according to the specific model of the bearing and the thickness of the retainer.

The edge 6 is arranged on one side of the retainer 2, the length of the edge =2-4mm, and the height of the edge =3mm, so that the retainer can be better prevented from contacting with the middle space ring, and the bearing shell 1 is arranged on the retainer 2 in a rolling mode through the rollers 3.

An oil inlet 5 is arranged in the middle of one side of the bearing shell 1.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (3)

1. A bearing stamping retainer structure for a working roll comprises a bearing outer shell (1), a retainer (2), a roller (3), a bearing inner shell (4), an oil inlet (5) and a turning edge (6), and is characterized in that the retainer (2) is rotatably arranged outside the bearing inner shell (4); the thickness of the retainer (2) is 3-10 mm; the retainer (2) is provided with a plurality of rectangular through holes, and the rollers (3) are arranged in a plurality of square holes formed in the retainer (2) in a rolling manner; a turning edge (6) is arranged on one side of the retainer (2), the length of the turning edge is =2-4mm, the height of the turning edge is =3mm, and the bearing shell (1) is installed on the retainer (2) in a rolling mode through the rollers (3).

2. A bearing-stamped cage structure for work rolls according to claim 1, characterized in that the thickness of the cage (2) is selected between 0.5 and 3 mm.

3. The structure of the bearing stamping holder for the working roll as claimed in claim 1, wherein an oil inlet (5) is formed in the middle of one side of the bearing housing (1).

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