CN209762015U

CN209762015U - four-row cylindrical roller rolling mill bearing

Info

Publication number: CN209762015U
Application number: CN201920229493.4U
Authority: CN
Inventors: 石红霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2019-12-10
Anticipated expiration: 2029-02-25

Abstract

The four-row cylindrical roller rolling mill bearing comprises two inner rings which are arranged side by side, two outer rings which are arranged on the outer sides of the two corresponding inner rings respectively, two retainers which are arranged in raceways formed by the two outer rings and the two inner rings in a buckling mode respectively, two rows of pockets which are arranged on each retainer, a plurality of rollers which are arranged in the pockets corresponding to the two retainers, and the inner wall of the raceway of each outer ring is a smooth curved surface. Along the roller path direction, two sides of the outer wall of the roller path of each inner ring are respectively provided with an outer flange, and the middle flange is arranged in the middle. The retaining edge of the bearing is arranged on the inner ring, the rollers, the retainer and the inner ring form an inner assembly, the outer raceway is flat, the number of pockets of the retainer is the same as that of the rollers, and the two rows of pockets, the two rows of rollers, one pocket, one roller and a set of four-row cylinders all comprise two assemblies and two inner (outer) rings. The bearing is cleaned and the cleaning method is easy. The bearing service quality condition is easy to check and find, the outer ring is easy to rotate, the replacement frequency of the inner ring is reduced, and the bearing consumption is reduced.

Description

Four-row cylindrical roller rolling mill bearing

Technical Field

The technology belongs to the field of rolling bearings, and particularly belongs to a four-row cylindrical roller rolling mill bearing.

Background

It is known that in the metallurgical industry, whether cold rolling or hot rolling, whether wire or hot strip, four-row cylindrical roller bearings are commonly used as the working rolls and the supporting rolls on the rolling mill, and the application of the four-row cylindrical roller bearings is widely not comparable to any other bearings.

In the steel rolling work, an operator needs to perform quality condition inspection and cleaning on a roller and a bearing installed on the roller irregularly, find that bearing parts which are damaged and can not be used continuously need to be replaced immediately, and if the bearing parts are not damaged, the bearing parts can be used continuously, but before the bearing parts are used, the original bearing needs to be cleaned and smeared with fresh lubricating grease.

However, in the process of checking and cleaning the quality condition of the bearing by an operator, the existing bearing has two serious defects due to structural reasons, one is that the quality condition of an outer ring is not easy to find, the outer ring is damaged and cannot be timely and accurately replaced, and the other is that the bearing is difficult to clean, particularly, an outer assembly consisting of a roller, a retainer and an outer ring is still in a bearing seat and is difficult to clean, particularly, the roller is in a roller path with a flange, and dirt in an oil groove and between a retainer pocket hole and a roller gap cannot be cleaned out at all. From the stress situation, the outer ring does not rotate during working and belongs to local load under the working state, namely only a small part of the stress is applied to the circumference of the inner ring, most of the inner ring is not applied with the stress, so the inner ring and the outer ring are easily damaged in a working period, while the inner ring rotates, namely, the inner ring of the inner ring is uniformly applied with the stress in the working state, so the service life of the inner ring of the bearing is much longer than that of the outer ring, but the inner ring is frequently replaced as long as the outer ring is not broken, actually, the stress point of the outer ring is possibly damaged early due to abrasion and fatigue, the steel rolling quality is seriously influenced due to the fact that the faulty running cannot be found, namely, the replacement cannot be carried out in time, the replacement is not carried out but is frequently carried out, and the steel rolling cost is improved due to the frequent replacement of the inner ring, and the problems are.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a four-row cylindrical roller rolling mill bearing. The bearing is cleaned and the cleaning method is easy. The bearing service quality condition is easy to check and find, the outer ring is easy to rotate, the replacement frequency of the inner ring is reduced, and the bearing consumption is reduced.

The technical scheme is as follows:

Four-row cylindrical roller rolling mill bearing, including two outer lanes, two inner circles, two cages and a plurality of roller, two inner circles set up side by side, and two outer lanes are installed respectively in two inner circles outsides that correspond, and two cages are installed respectively in the raceway that two outer lanes and two inner circle locks formed, are equipped with two rows of pockets on every cage, and a plurality of rollers are installed in the pocket that two cages correspond, its characterized in that:

The inner wall of the raceway of each outer ring is a smooth curved surface. Along the roller path direction, two sides of the outer wall of the roller path of each inner ring are respectively provided with an outer flange, and the middle flange is arranged in the middle.

The retaining edge of the bearing is arranged on the inner ring, the rollers, the retainer and the inner ring form an inner assembly, the outer raceway is flat, the number of pockets of the retainer is the same as that of the rollers, and the two rows of pockets, the two rows of rollers, one pocket, one roller and a set of four-row cylinders all comprise two assemblies and two inner (outer) rings.

The advantages are that: the bearing is cleaned and the cleaning method is easy. The bearing service quality condition is easy to check and find, the outer ring is easy to rotate, the replacement frequency of the inner ring is reduced, the bearing consumption is reduced, the steel rolling benefit is improved, and the current situation of the roller in the metallurgical industry is thoroughly changed. The outer raceway is flat and although the entire outer race is still in the bearing seat, the quality of the raceway is unobtrusive. If the stress point is slightly damaged, the damaged part which is not stressed can be transferred to a load area by a transposition method, so that the outer ring can continue without replacement, the bearing consumption is reduced, and the steel rolling cost is reduced; the inner component is formed by connecting the roller, the retainer and the inner ring into a whole, but the outer surface of the inner component is convenient to clean, dirty objects are easy to take away by cleaning liquid, and the inner component is rotary, so that the inner circle of the inner raceway is uniformly stressed, the service life of the inner component is prolonged, the inner raceway is not required to be frequently replaced at all, the outer raceway is easy to clean, and the inner component is cleaned by cleaning cloth.

Drawings

Fig. 1 is a schematic structural diagram of the bearing of the present invention.

Fig. 2 is a schematic structural diagram of the outer ring of the present invention.

Fig. 3 is a schematic structural diagram of the inner assembly of the present invention.

Fig. 4 is a schematic structural view of the inner ring of the present invention.

Fig. 5 is a schematic side view of the retainer of the present invention.

Fig. 6 is a schematic top view of the retainer of the present invention.

Fig. 7 is a schematic structural view of the ball of the present invention.

Fig. 8 is a schematic view of an assembly structure of a bearing and a bearing seat according to the present invention.

Fig. 9 is a schematic view of an assembly structure of the bearing and the roller according to the present invention.

Fig. 10 is a schematic structural view of a conventional four-row cylindrical roller mill bearing.

FIG. 11 is a schematic view of the structure of the outer assembly of the bearing of the prior four-row cylindrical roller rolling mill.

FIG. 12 is a schematic view of the inner ring structure of a bearing of a prior art four-row cylindrical roller mill.

Fig. 13 is a schematic structural diagram of an outer ring of a bearing of a conventional four-row cylindrical roller mill.

Fig. 14 is a schematic view of an assembly structure of a bearing and a bearing seat of a conventional four-row cylindrical roller mill bearing.

Fig. 15 is a schematic view of an assembly structure of a bearing and a roller of a bearing of a prior four-row cylindrical roller mill.

Detailed Description

The existing four-row cylindrical roller rolling mill bearing is composed of an outer assembly and an inner ring, namely, a roller and a retainer are arranged on the outer ring to form the outer assembly, and the outer ring is provided with two outer flanges and a middle flange; while the inner ring outer diameter (inner raceway) is flat. The bearing consists of an outer ring (without an outer component) and an inner component (an inner ring, a roller and a retainer), wherein the inner ring raceway is provided with two outer flanges and a middle flange, and the outer ring raceway without the flanges is a flat plate.

Four-row cylindrical roller rolling mill bearing, including two outer lanes 1, two inner circles 2, two holders 3 and a plurality of roller 4, two inner circles 2 set up side by side, two outer lanes 1 are installed respectively in two inner circles 2 outsides that correspond, two holders 3 are installed respectively in the raceway that two outer lanes 1 and two inner circles 2 lock formed, be equipped with two rows of pockets holes on every holder 3, a plurality of roller 4 are installed in the pocket hole that two holders 3 correspond, the raceway inner wall of above-mentioned every outer lane 1 is smooth curved surface. Along the raceway direction, two sides of the outer wall of the raceway of each inner ring 2 are respectively provided with an outer flange 5, and the middle part is provided with a middle flange 6.

Claims

1. Four-row cylindrical roller rolling mill bearing, including two outer lane (1), two inner circle (2), two holder (3) and a plurality of roller (4), two inner circle (2) set up side by side, install respectively in two inner circle (2) outsides that correspond in two outer lanes (1) and two inner circle (2) lock formation in two outer lane (1) and two outer lane (3), be equipped with two rows of pocket holes on every holder (3), install in the pocket hole that two holder (3) correspond in a plurality of roller (4), its characterized in that:

The inner wall of the raceway of each outer ring (1) is a smooth curved surface; along the raceway direction, two sides of the outer wall of the raceway of each inner ring (2) are respectively provided with an outer flange (5), and the middle part is provided with a middle flange (6).