CN206830647U

CN206830647U - A kind of back lining bearing

Info

Publication number: CN206830647U
Application number: CN201720755641.7U
Authority: CN
Inventors: 冯巨波; 冯延波; 段雷强; 吴孟川
Original assignee: Jiangsu Bearing Co Ltd Dili Dili
Current assignee: Jiangsu Bearing Co Ltd Dili Dili
Priority date: 2017-06-27
Filing date: 2017-06-27
Publication date: 2018-01-02
Anticipated expiration: 2027-06-27

Abstract

The utility model provides a kind of back lining bearing, including：Bearing outer ring, bearing inner race, the retainer being arranged between bearing outer ring and bearing inner race, and it is kept some cylindrical rollers that frame is housed；The outer ledge of the both ends end of the bearing outer ring offers annular steps portion, annular steps portion assembling thrust ball bearing, and thrust ball bearing longitudinally protrudes out the annular end face of the bearing outer ring.In the utility model, the thrust ball bearing for protruding out bearing outer ring by assembling longitudinal direction at the outer ledge of the both ends end of bearing outer ring, so that the sliding friction originally formed between the axial side and saddle system of back lining bearing by PTFE packing rings becomes rolling friction by thrust ball bearing, and eliminate TPFE packing rings, so as to significantly reduce TPFE packing rings bearing outer ring and saddle system are formed caused by wear, and improve the service life of back lining bearing.

Description

A kind of back lining bearing

Technical field

Technical field of bearings is the utility model is related to, a kind of backing axle being more particularly to used in multiple rollers cold calender Hold.

Background technology

Back lining bearing is widely used on multiple rollers cold calender and leveller equipment, is mainly used in steel and non-ferrous metal steel band High precision rolling, also available for other purposes, such as roller-type straightening machine or bender.Back lining bearing is the especially thick rolling in outer ring Bearing, being arranged on pattern in groups on static axle during use turns into support roller.Pressure on working roll passes through intermediate calender rolls transmission Frame is sent to the back lining bearing being set in support roller, and by saddle system.The structural shape of back lining bearing have it is a variety of, According to the difference of structural shape, back lining bearing can bear higher radial load, while can also bear to pass through adjacent mechanism The axial load being delivered in frame.

Saddle system generally wears multiple back lining bearings, and installs TPFE packing rings additional between the axial side of back lining bearing, with Isolation and protection are played a part of by TPFE packing rings.But by axially clamping in the saddle system of multiple rollers cold calender There is huge axial load in back lining bearing, therefore this axial load can be to TPFE packing rings and two adjacent back lining bearings Bearing outer ring forms sliding friction.This sliding friction can to TPFE packing rings produce abrasion, when TPFE gasket wears totally when, phase The sidepiece of the bearing outer ring of two adjacent back lining bearings will contact with each other, and thus produce direct sliding friction, and therefore Cause bearing outer ring to produce abrasion, thus cause the service life of back lining bearing of the prior art to greatly shorten.

In view of this, it is necessary to back lining bearing of the prior art is improved, to solve the above problems.

Utility model content

The purpose of this utility model is to disclose a kind of back lining bearing, and support roller is arranged on to reduce multiple back lining bearings TPFE packing rings were omitted to being clamped in the friction of middle saddle system between the bearing outer ring of two adjacent back lining bearings when upper, And improve the service life of back lining bearing.

To achieve the above object, the utility model provides a kind of back lining bearing, including：Bearing outer ring, bearing inner race, if The retainer between bearing outer ring and bearing inner race is put, and is kept some cylindrical rollers that frame is housed；The bearing The outer ledge of the both ends end of outer ring offers annular steps portion, and thrust ball bearing is assembled in the annular steps portion, described Thrust ball bearing longitudinally protrudes out the annular end face of the bearing outer ring.

As further improvement of the utility model, the thrust ball bearing longitudinally protrudes out the ring-type of the bearing outer ring The distance of end face is 0.5~1.5mm.

As further improvement of the utility model, the internal face of the bearing inner race opens up some oilholes.

As further improvement of the utility model, width and the annular steps portion of the annular end face of the bearing outer ring The ratio between width is 5:1~4:1.

Compared with prior art, the beneficial effects of the utility model are：In the utility model, by bearing outer ring The thrust ball bearing that longitudinal direction protrudes out bearing outer ring is assembled at the outer ledge of both ends end so that the axial side of back lining bearing Rolling friction is originally become by thrust ball bearing by the sliding friction that PTFE packing rings are formed between saddle system, and Eliminate TPFE packing rings, so as to significantly reduce TPFE packing rings bearing outer ring and saddle system are formed caused by wear, and Improve the service life of back lining bearing.

Brief description of the drawings

Fig. 1 is a kind of front view of back lining bearing of the utility model；

Fig. 2 is the sectional view of the line A-A along Fig. 1, and has installed saddle system additional in detail in this figure；

Thrust ball bearing is assembled in the annular steps portion that Fig. 3 is opened up by the outer ledge of the both ends end of bearing outer ring Partial schematic diagram.

Embodiment

The utility model is described in detail shown each embodiment below in conjunction with the accompanying drawings, but it should explanation, These embodiments are not limitation of the utility model, and those of ordinary skill in the art are according to these embodiment institute works Energy, method or equivalent transformation or replacement in structure, are belonged within the scope of protection of the utility model.

It please join Fig. 1 to a kind of a kind of embodiment of back lining bearing of the utility model illustrated in fig. 3.In this implementation In mode, the back lining bearing, including：Bearing outer ring 1, bearing inner race 2, the guarantor being arranged between bearing outer ring 1 and bearing inner race 2 Frame 3 is held, and is kept some cylindrical rollers 4 that frame 3 is housed.The outer ledge of the both ends end of the bearing outer ring 1 is equal Annular steps portion 101 is offered, thrust ball bearing 102, the longitudinal direction of thrust ball bearing 102 are assembled by the annular steps portion 101 Protrude out the annular end face 11 of the bearing outer ring 1.

The axial inner of bearing inner race 2 forms the circular cylindrical cavity 20 passed through for support roller (not shown), and in support roller The back lining bearing shown by multiple present embodiments is continuously set with (not specifically illustrated).Multiple back lining bearings are arranged on saddle system On system 5.Saddle system 5 is similarly formed the through hole 52 passed through for support roller, so as to form back lining bearing with saddle system 5 in continuous Spaced apart form.

Join Fig. 1 and Fig. 3 shown in, the thrust ball bearing 102 by blowout patche 112, seat ring 122, by blowout patche 112 and the institute of seat ring 122 (not specifically illustrated) composition of roller 132 and retainer of clamping.The ring-type side 103 of seat ring 122 in thrust ball bearing 102 is vertical To the annular end face 11 for protruding out the bearing outer ring 1.Therefore, when two back lining bearings clamp a saddle system 5, the saddle The ring-type side 51 of base system 5 does not contact with the annular end face 11 of bearing outer ring 1, but is realized by thrust ball bearing 102 Longitudinal isolation.Because blowout patche 112 and seat ring 122 relative can roll, it forms rolling surface perpendicular to support roller, so as to effectively Ground avoids saddle system 5 and directly contacted with the annular end face 11 of bearing outer ring 1, and is formd by the thrust ball bearing 102 The less rolling friction of resistance, so as to effectively reduce the multiple adjacent back lining bearings being arranged in support roller to clamped by it Saddle system 5 caused by abrasion, improve the service life of back lining bearing, while also omit and be originally arranged on saddle system Clamped PTFE packing rings between 5 and bearing outer ring 1.In order to further reduce the thrust ball bearing 102 in rolling friction process In to the abrasion caused by saddle system 5, the width of the annular end face 11 of the bearing outer ring 1 and the width in annular steps portion 101 The ratio between be 5:1~4:1.

In the present embodiment, the longitudinal direction of the thrust ball bearing 102 protrude out the annular end face 11 of the bearing outer ring 1 away from The bearing outer ring 1 is protruded out from the longitudinal direction of ring-type side 103 for 0.5~1.5mm, i.e. seat ring 122 in thrust ball bearing 102 The distance of annular end face 11 be 0.5~1.5mm, and more preferably 1mm.

Meanwhile in the present embodiment, the internal face of bearing inner race 2 opens up some oilholes 21.Oilhole 21 extends transversely through Inner ring 2 is held, and is extended at cylindrical roller 4, to provide grease for cylindrical roller 4 and retainer 3, to realize effectively lubricating.Tool Body, the internal face of the bearing inner race 2 forms two circle oilhole groups, and each circle oilhole group is made up of multiple oilholes 21, and two circle oil Kong Qun be arranged in parallel.

The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above Body illustrates that they are simultaneously not used to limit the scope of protection of the utility model, all to be made without departing from the utility model skill spirit Equivalent implementations or change should be included within the scope of protection of the utility model.

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims

A kind of 1. back lining bearing, it is characterised in that including：Bearing outer ring (1), bearing inner race (2), it is arranged on bearing outer ring (1) Retainer (3) between bearing inner race (2), and it is kept some cylindrical rollers (4) that frame (3) is housed；The bearing The outer ledge of the both ends end of outer ring (1) offers annular steps portion (101), and annular steps portion (101) assembling pushes away Power ball bearing (102), the thrust ball bearing (102) longitudinally protrude out the annular end face (11) of the bearing outer ring (1).
2. back lining bearing according to claim 1, it is characterised in that the thrust ball bearing (102) longitudinally protrudes out institute The distance for stating the annular end face (11) of bearing outer ring (1) is 0.5~1.5mm.
3. back lining bearing according to claim 1, it is characterised in that the internal face of the bearing inner race (2) opens up some Oilhole (21).
4. back lining bearing according to claim 1, it is characterised in that the annular end face (11) of the bearing outer ring (1) The ratio between width and the width in annular steps portion (101) are 5:1~4:1.