CN206830646U

CN206830646U - Back lining bearing

Info

Publication number: CN206830646U
Application number: CN201720755642.1U
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, it is kept some cylindrical rollers that frame is housed, and the rolling element back-up ring of longitudinal direction clamping bearing inner race；The inside edge of the both ends end of the bearing outer ring offers annular steps portion, annular steps portion assembling thrust roller bearing, and thrust roller 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

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, is kept some cylindrical rollers that frame is housed, and longitudinal direction clamping The rolling element back-up ring of bearing inner race；The inside edge of the both ends end of the bearing outer ring offers annular steps portion, described Thrust roller bearing is assembled in annular steps portion, and the thrust roller bearing longitudinally protrudes out the annular end face of the bearing outer ring.

As further improvement of the utility model, the thrust roller bearing longitudinally protrudes out the ring of the bearing outer ring The distance of shape end face is 1~1.5mm.

As further improvement of the utility model, the thrust roller bearing is made up of copper dish and roller, the copper dish The embedded hole of some annular configurations is opened up, the roller is embedded in the embedded hole, and the sidepiece of the roller protrudes out copper dish Surface.

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 2:1~3:2.

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 the front view of the utility model back lining bearing；

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；

The partially schematic of thrust roller bearing is assembled in the annular steps portion that Fig. 3 is opened up by the both ends end of bearing outer ring Figure.

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 embodiment of the utility model back lining bearing illustrated in fig. 3.In present embodiment In, the back lining bearing, including：Bearing outer ring 1, bearing inner race 2, the retainer being arranged between bearing outer ring 1 and bearing inner race 2 3, it is kept some cylindrical rollers 4 that frame 3 is housed, and the rolling element back-up ring 132 of longitudinal direction clamping bearing inner race 2.Rolling element Back-up ring 132 contacts with bearing inner race 2, and for limiting the length travel of cylindrical roller 4.The both ends end of bearing outer ring 1 it is interior Lateral edges offer annular steps portion 101, and thrust roller bearing 102, the thrust roller assemble in the annular steps portion 101 The longitudinal direction of bearing 102 protrudes out the annular end face 11 of the bearing outer ring 1.

Join shown in Fig. 2, thrust roller bearing 102 is made up of copper dish 122 and roller 112.Wherein, copper dish 122 open up some The embedded hole 1221 of annular configuration, the roller 112 are embedded in the embedded hole 1221, and the sidepiece of the roller 112 protrudes out The surface of copper dish 122.Copper dish 122 play a part of retainer, and the thrust roller bearing 102 in thrust roller bearing 102 It is not provided with inner ring made of metal and outer ring.

In the present embodiment, multiple embedded holes 1221 are in a ring and close to the outer ledge arrangement of copper dish 122, roller 112 can realize rolling in embedded hole 1221.Therefore, when two back lining bearings clamp saddle system 5, the saddle system 5 Ring-type side 51 does not contact with the annular end face 11 of bearing outer ring 1, but by thrust roller bearing 102 realize longitudinal direction every From.Because roller 112 can roll in embedded hole 1221, and the longitudinal direction of roller 112 protrudes out the annular end face of the bearing outer ring 1 11, therefore can be isolated saddle system 5 with the annular end face 11 of bearing outer ring 1 by roller 112, so as to be effectively prevented from Saddle system 5 directly contacts with the annular end face 11 of bearing outer ring 1, and by the thrust roller bearing 102 forms resistance Less rolling friction, so as to effectively reduce the multiple adjacent back lining bearings being arranged in support roller to the saddle clamped by it Abrasion, does not need to use PTFE packing rings of the prior art caused by base system 5, so as to improve the use longevity of back lining bearing Life, and reduce the use cost of support roller.

The axial inner of bearing inner race 2 forms the circular cylindrical cavity 20 passed through for support roller, and (does not show specifically in support roller Go out) on continuous suit back lining bearing, saddle system 5 and rolling element back-up ring 132.132 same shape of saddle system 5 and rolling element back-up ring It is in consecutive intervals cloth so as to form back lining bearing with saddle system 5 and rolling element back-up ring 132 into the through hole 52 passed through for support roller The form put.Specifically, in the present embodiment, the longitudinal direction of thrust roller bearing 102 protrudes out the ring-type of the bearing outer ring 1 The distance of end face 11 is 1~1.5mm, and most preferably 1mm.Meanwhile the width and circle of the annular end face 11 of the bearing outer ring 1 The ratio between width of ring stage portion 101 is 2:1~3:2, and most preferably 2:1.

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

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) and axle The retainer (3) between inner ring (2) is held, is kept some cylindrical rollers (4) that frame (3) is housed, and longitudinal direction clamping bearing The rolling element back-up ring (132) of inner ring (2)；The inside edge of the both ends end of the bearing outer ring (1) offers annular steps Portion (101), annular steps portion (101) the assembling thrust roller bearing (102), thrust roller bearing (102) longitudinal direction are convex Stretch 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 roller bearing (102) longitudinally protrudes out The distance of the annular end face (11) of the bearing outer ring (1) is 1~1.5mm.

3. back lining bearing according to claim 1, it is characterised in that the thrust roller bearing (102) is by copper dish (122) And roller (112) composition, the copper dish (122) open up the embedded hole (1221) of some annular configurations, the roller (112) is embedded In the embedded hole (1221), the sidepiece of the roller (112) protrudes out the surface of copper dish (122).

4. 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).

5. 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 2:1~3:2.