CN211288483U

CN211288483U - Backing roll thrust bearing for cold rolling mill

Info

Publication number: CN211288483U
Application number: CN201922277804.7U
Authority: CN
Inventors: 乔春旭; 闻保新; 段雷强; 董维良
Original assignee: Jiangsu Dimengde Bearing Co ltd
Current assignee: Jiangsu Dimengde Bearing Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-08-18
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a bearing, especially a backing roll footstep bearing for cold rolling mill, including outer lane, inner circle, well space ring, tapered roller and holder, the center department of the outer disc of inner circle is equipped with the middle ring that keeps off, and the outer disc symmetry of institute inner circle is equipped with two outer raceways, outer raceway is located respectively the both ends of inner circle, outer raceway to the both ends slope of inner circle sets up, the middle ring that keeps off is located between two outer raceways, one side of outer raceway is located the middle ring department that keeps off, the opposite side is located the both ends of inner circle. The utility model provides a pair of backing roll footstep bearing for cold rolling mill passes through split type dismouting, can avoid the bruising of installation, makes the bearing install in place easily and the adjustment is very simple, is convenient for wash and inspect the bearing user state, and it is very convenient to damage the part and change.

Description

Backing roll thrust bearing for cold rolling mill

Technical Field

The utility model relates to a bearing, especially a backing roll footstep bearing for cold rolling mill.

Background

The thrust bearing of the cold rolling supporting roller is a double-row TDI structure tapered roller bearing, the bearing weight of the bearing is more than 200 kg, the inner diameter size of the bearing is more than phi 260mm, and an inner assembly of the bearing is of a strut welding type structure. As shown in fig. 1, both sides of the outer raceway 12 of the inner ring 8 of the bearing are provided with flanges 81, the inner ring 8 and the tapered roller 2 are integrally disassembled during disassembly and assembly, the disassembly is inconvenient due to heavy weight, the assembly is inconvenient, the inner ring 8 and the tapered roller 2 need to be disassembled or inserted into the outer ring during disassembly and assembly, the axis of the inner ring 8 and the axis of the outer ring need to be ensured to coincide in the disassembly and assembly process, the inner ring 8 and the tapered roller 2 are heavy in weight, the position adjustment is difficult, the inner ring 8 and the tapered roller 2 are easy to cause the collision between the surface of the tapered roller 2 and the outer ring or the middle spacing ring to generate scratches or damage the inner raceway of the outer ring in the insertion process, the service life of the bearing.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a simple to operate and disassemble, the difficult interior raceway of damaging tapered roller or outer lane is a backing roll footstep bearing for cold rolling mill, and concrete technical scheme is:

the utility model provides a backing roll footstep bearing for cold rolling mill, includes outer lane, inner circle, intermediate space circle, tapered roller and holder, the center department of the outer disc of inner circle is equipped with the centre and keeps off the ring, and the outer disc symmetry of institute inner circle is equipped with two outer raceways, outer raceway is located respectively the both ends of inner circle, outer raceway to the both ends slope of inner circle sets up, the centre keeps off the ring and is located between two outer raceways, one side of outer raceway is located keep off ring department in the centre, the opposite side is located the both ends of inner circle.

By adopting the technical scheme, because the flange is not arranged at the end part of the outer raceway of the inner ring, the tapered roller and the inner ring can be detached separately when the bearing is disassembled and assembled, the hoisting weight during disassembly and assembly is greatly reduced, and the center is easily aligned and then disassembled. When dismantling, tear the outer lane that is located the outside earlier open, then dismantle the tapered roller that is located the outside, because there is not the flange, tapered roller is very convenient to pull down, pull down well spacer ring again, then pull down the inner circle again, pull down the tapered roller that is located the inboard again, pull down the outer lane that is located the inboard at last, because separately dismantle, the weight of every dismouting has been reduced greatly, make the dismouting laborsaving, conveniently look for center and control direction, effectively alleviate the fish tail that the collision produced, because light in weight, the collision is difficult for producing the fish tail, weight is heavier when original whole dismantlement, inertia is big, can produce great fish tail or pit after the collision, consequently, the convenience of dismouting has been improved, can effectively protect the bearing, do not influence the life of bearing.

Furthermore, a middle oil groove is arranged between the middle baffle ring and the outer raceway.

Furthermore, the retainer is provided with a dismounting hole.

Through adopting above-mentioned technical scheme, dismouting hole is convenient for hoist and mount holder.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of backing roll footstep bearing for cold rolling mill passes through split type dismouting, can avoid the bruising of installation, makes the bearing install in place easily and the adjustment is very simple, is convenient for wash and inspect the bearing user state, and it is very convenient to damage the part and change.

Drawings

FIG. 1 is a partial cross-sectional view of a prior art thrust bearing;

FIG. 2 is a partial cross-sectional view of a backup roll thrust bearing for a cold rolling mill;

fig. 3 is a partial sectional view of the inner race.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

As shown in fig. 2 and 3, a thrust bearing of a support roller for a cold rolling mill comprises an outer ring, an inner ring 1, a middle spacing ring, a tapered roller 2 and a retainer 3, wherein a middle baffle ring 13 is arranged at the center of the outer circular surface of the inner ring 1, two outer rolling paths 12 are symmetrically arranged on the outer circular surface of the inner ring 1, the outer rolling paths 12 are respectively arranged at two ends of the inner ring 1, the outer rolling paths 12 are obliquely arranged towards the two ends of the inner ring 1, the middle baffle ring 13 is arranged between the two outer rolling paths 12, one side of each outer rolling path 12 is arranged at the middle baffle ring 13, and the other side of each outer rolling.

Because the flange 11 is not arranged at one end of the outer raceway 12 of the inner ring 1, which is positioned at the end part of the inner ring 1, when the bearing is disassembled and assembled, the tapered roller 2 and the inner ring 1 can be disassembled and assembled separately, thereby greatly reducing the hoisting weight when the bearing is disassembled and assembled, and being easy to assemble and disassemble after the center is aligned. When dismantling, tear the outer lane that is located the outside earlier open, then dismantle tapered roller 2 that is located the outside, because there is not flange 11, tapered roller 2 very convenient dismantlement, tear down the well spacer ring again, then pull down inner circle 1 again, pull down tapered roller 2 that is located inboard again, pull down the outer lane that is located inboard at last, because separately dismantle, the weight of every dismouting has been reduced greatly, make the dismouting laborsaving, conveniently look for center and control direction, effectively alleviate the fish tail that the collision produced, because light in weight, the collision is difficult for producing the fish tail, weight is heavier during original whole dismantlement, inertia is big, can produce great fish tail or pit after the collision, consequently, the convenience of dismouting has been improved, can effectively protect the bearing, do not influence the life of bearing.

An intermediate oil groove 14 is arranged between the intermediate baffle ring 13 and the outer raceway 12.

The retainer 3 is provided with a dismounting hole. The dismounting holes are convenient for hoisting the retainer 3.

Claims

1. A thrust bearing of a supporting roller for a cold rolling mill comprises an outer ring, an inner ring, a middle spacing ring, a tapered roller and a retainer, and is characterized in that,

the center of the outer circular surface of the inner ring is provided with a middle retaining ring, the outer circular surface of the inner ring is symmetrically provided with two outer rolling paths, the outer rolling paths are respectively positioned at two ends of the inner ring, the outer rolling paths are obliquely arranged towards two ends of the inner ring, the middle retaining ring is positioned between the two outer rolling paths, one side of each outer rolling path is positioned at the middle retaining ring, and the other side of each outer rolling path is positioned at two ends of the inner ring.

2. A backup roll thrust bearing for a cold rolling mill according to claim 1 characterized in that an intermediate oil gallery is provided between the intermediate retainer ring and the outer raceway.

3. A backup roll thrust bearing for a cold rolling mill according to claim 1, characterized in that said retainer is provided with a disassembly hole.