CN2835689Y - Rolling and sliding integrated bearing for rolling mill - Google Patents

Abstract

The utility model relates to a bearing in a transmission gear of a clutch of a reducing sizing mill of a high-speed wire rolling mill. A tapered roller bearing is arranged in a hole of on one end of the gear; the utility model particularly solves the problem of a bearing structure in a hole on the other end of the transmission gear. The utility model discloses a rolling and sliding integrated bearing of a rolling mill, which comprises an outer ring of the bearing and an inner ring of the bearing. The utility model is characterized in that a retaining side of the outer ring of the bearing and the matching contact face of the inner ring are both designed into a conical face; a gap is arranged between the two conical faces. The utility model uses a steel ball of the bearing for load bearing at the time of light load; the utility model uses the contact of the conical face of the inner ring of the bearing and the conical face of the outer ring of the bearing for load bearing at the time of heavy load; therefore, the utility model becomes a dual purpose bearing which can bear rolling as well as sliding on the same bearing. The utility model has the advantages that load bearing capacity of the bearing is improved, the service life of the bearing is prolonged and economic loss is reduced.

Description

Rolling slip one roller-mill bearing

Technical field

The utility model relates to bearing, is used in particular for the bearing in the high-speed rod-rolling mill clutch drive gear, and when being used for clutches engaged, bearing enclose does not have relative rotation, but loading ability of bearing; During clutch separation, bearing inner race rotation, bearing proper functioning.

Background technique

The clutch of reducing sizing mill in the high-speed rod-rolling mill all is equipped with tapered roller bearing in the omoplate hole, driving gear two ends of existing this clutch.During not with gear engagement, gear does not bear rolling load at clutch, only dallies on axle.When clutch and gear engagement, gear, bearing and between centers do not have and relatively rotate, and become rigid joint.This moment, bearing roller and Internal and external cycle raceway were not have to bear rolling load under the situation of rotating, and rolling element surface, Internal and external cycle raceway all produce plastic indentation after a period of time, cause the bear vibration aggravation, cause gear failure.Thereby must often shut down and change bearing, thereby bring bigger economic loss.To this, milling train manufacturer does not still have feasible solution both at home and abroad.If clutch drive gear is subjected to still to adorn tapered roller bearing in the little stomidium of axial force, be subjected to the big the other end gear hole inner bearing of axial force and change, improve bearing load carrying capacity.But how redesigning the new bearing of this end, will be the problem that the sector scientific and technical personnel manage to solve.

Summary of the invention

At the defective that prior art exists, for solving bearing structure, the utility model provides rolling slip one roller-mill bearing, and it can improve the load capacity of bearing.

The utility model is to realize that by following technological scheme it comprises bearing outer ring, bearing inner race, and its structure outline is that this bearing is an angular contact ball bearing, and the outer ring rib of bearing cooperates surface of contact all to be made as the conical surface with inner ring.

Be provided with gap delta between the outer ring rib conical surface of above-mentioned bearing and the bearing inner race conical surface.

The described bearing inner race conical surface is provided with and is used for the oilhole that lubricating bearings uses, and gap delta communicates between this oilhole and the axle and the bearing enclose conical surface.

The rolling slip one roller-mill bearing of the utility model design has substituted existing tapered roller bearing, when underloading, carry with ball bearing, and when heavy duty, contact carrying with the inner ring conical surface with the outer ring rib conical surface, become on same bearing, to bear the dual-purpose bearing that rolling can be born slip again.Improve the bearing capacity of bearing, prolonged bearing working life, improved business efficiency.

Description of drawings

Below with reference to drawings and Examples the utility model is further described.

Accompanying drawing is the utility model structural representation.

Embodiment

In the accompanying drawing, bearing outer ring 1, steel ball 2, retainer 3, bearing inner race 4, the outer ring rib conical surface 5, the inner ring conical surface 6, oilhole 7.Rolling slip one roller-mill bearing is an angular contact ball bearing, and it is installed in clutch drive gear one end in the high-speed rod-rolling mill reducing sizing mill.The outer ring rib conical surface 5 and the inner ring conical surface 6 of this rolling slip one roller-mill bearing match, and when clutch separation, rolling slip one roller-mill bearing is only born the component that gear gravity is produced, and it is less to load.The stressed of slip one roller-mill bearing that roll this moment transmits by steel ball 2, bearing inner race 4 rotations.Have gap delta between the bearing enclose conical surface 6,5, rolling slip one roller-mill bearing can normally rotate and work.Work as clutches engaged, the carrying of rolling slip one roller-mill bearing, the Internal and external cycle 4,1 of bearing does not have rotation relatively, and bearing is because of being subjected to bigger axial load, bearing outer ring 1 relative inner ring 4 produces displacement, and the bearing outer ring rib conical surface 5 contacts the gap delta disappearance with the bearing inner race conical surface 6.Rolling this moment, steel ball 2 suffered loads no longer increase in the slip one roller-mill bearing, and the overwhelming majority load of rolling load transmits by the Internal and external cycle conical surface 6,5, and this part load is more much bigger than the load that steel ball bears.The bearing inner race conical surface 6 is provided with an oilhole 7, and gap delta communicates between this oilhole 7 and the axle and the bearing enclose conical surface, is used for lubricating bearings.

Claims (3)

1. rolling slip one roller-mill bearing comprises bearing outer ring, bearing inner race, it is characterized in that: the outer ring rib of bearing cooperates surface of contact all to be made as the conical surface with inner ring.

2. rolling slip one roller-mill bearing according to claim 1 is characterized in that: be provided with gap delta between the outer ring rib conical surface of bearing and the bearing inner race conical surface.

3. rolling slip one roller-mill bearing according to claim 1 and 2 is characterized in that: the described bearing inner race conical surface is provided with and is used for the oilhole that lubricating bearings uses, and gap delta communicates between this oilhole and the axle and the bearing enclose conical surface.

Images