CN201651055U

CN201651055U - Novel-structured rolling mill bearing cage replacing copper with iron

Info

Publication number: CN201651055U
Application number: CN2010201569318U
Authority: CN
Inventors: 车正君; 林彬
Original assignee: 车德礼
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2010-11-24
Anticipated expiration: 2020-04-13

Abstract

The utility model relates to a novel-structured rolling mill bearing cage replacing copper with iron, which comprises an outer ring, an inner ring and two cages mounted between the inner ring and the outer ring. The bearing cage is characterized in that: a roller, the end face of which is provided with a pit, is mounted in each pocket of the cages, crank arms are arranged at positions on the cages, which correspond to the pits on the end faces of the rollers, and the crank arms on the cages are respectively embedded in the corresponding pits on the end faces of the rollers. The utility model mainly has the advantages that: the structure is simple, mounting is convenient, the inner and the outer rings can be mounted independent from the bearing, i.e., a small copper hammer or rod can be used for lightly knocking the rollers into the pockets of the cages, the rollers cannot easily come off, the material cost is low, the weight is light, and in addition, the rated load and rated static load of the bearing can be increased.

Description

New structure roller-mill bearing retainer uses iron instead of copper

Technical field the utility model relates to bearing and makes field, a kind of new structure roller-mill bearing retainer that uses iron instead of copper

The existing selfaligning roller bearing of background technique generally adopts copper cage, and its material mark is the CUZN40PB2 lead brass.Because the copper resource is fewer and feweri, the price of copper makes the bearing cost more and more higher also in continuous growth.So improve the copper cage structure and adopt the technology of new material constantly to develop.An annular boss is established at the internal diameter of original copper cage middle part in addition, form the Spielpassung face with position, the middle-grade limit of bearing inner race, the rotation of middle-grade limit guiding retainer, when bearing rotates, there is relative movement on the annular boss and the middle-grade limit of bearing inner race at the internal diameter middle part of retainer, easily cause the wearing and tearing of retainer internal diameter, if will improve the bearing capacity of bearing, the length of roller will extend, and this just causes retainer boss width narrow, insufficient strength, become the weak link of bearing, the early stage damage of bearing will be caused if damage in this position, influences the working life of bearing, therefore, the annular boss structure at retainer internal diameter middle part has limited the raising of bearing load carrying capacity, has influenced application area.

The summary of the invention the purpose of this utility model provides a kind of new structure roller-mill bearing retainer that uses iron instead of copper of easy for installation, cost is low, bearing capacity is strong novelty, can be applied in each serial double-row self-aligning roller bearing, to replace entity (mainly the being brass) retainer in the present above-mentioned bearing both domestic and external, with abroad compare, owing to improvement has been arranged again on pressing cage structure, has been used for double-row self-aligning roller bearing.It is more to use serial scope, and dimensional range is bigger.

Technical problem to be solved by this invention is:

1, design of part is simple, pressing cage is symmetric form, aligning roller is easy for installation, with very little external force, and the roller retainer pocket hole of can packing into, and difficult drop-off, and fenestra type retainer both domestic and external is because its structure inadequate natural endowment is after bearing is used the some time, abominable as operating conditions, because wearing and tearing aperture window dimension mill is big, causes aligning roller from fenestra, to come off and cause and burden to user's use;

2 save material, and are centrifugal casting brass originally, the price height, and Heavy Weight now is 08 or the 08AL cold rolled sheet, and blank can be welded, and cost of material is very low, and is in light weight.In addition, no matter bearing inner race Vehicle Processing or to grind processing more convenient easily;

3 compare with brass solid cage and fenestra steel plate pressing cage, it can hold, and diameter is bigger, length is longer, more aligning roller, thereby can improve the dynamic load rating and the rated static load of bearing, finally reach and improve the bearing effect in working life, by theoretical calculation, generally can improve dynamic load rating 10%, bearing can improve 30～50% working life.

The technological scheme that adopts is:

Comprise outer ring, inner ring, between outer ring and inner ring, be equiped with two retainers, be equiped with the roller of end face band depression in each pocket hole of retainer respectively, on the retainer with roller end face on the depression corresponding part connecting lever is arranged, formation type second retainer.Connecting lever on the retainer embeds respectively in the depression on the with it corresponding roller end face.

Major advantage of the present utility model is:

1, simple in structure, easy for installation and can break away from bearing enclose and independently install, promptly with little steel hammer or one strike gently, roll in the retainer pocket hole of can packing into, and difficult drop-off.

2, save material, former retainer is a centrifugal casting brass, price height, heavy, the utility model adopts 35 or 45 cold rolled sheets, and blank can be welded, and the cost of material is low, in light weight, in addition, no matter bearing inner race Vehicle Processing or mocha worker are more convenient easily.

3, compare with brass solid cage and steel plate pressing cage, it can hold, and diameter is bigger, length is longer, more aligning roller, thereby can improve the dynamic load rating and the rated static load of bearing, finally reach and improve the bearing effect in working life, by theoretical calculation, generally can improve dynamic load rating 10%, bearing improves 30-50% working life.

Description of drawings

Fig. 1 is the utility model sectional view.

Embodiment

Mode of execution is very simple and convenient, this retainer and aligning roller can break away from bearing enclose and independent assembling, see also Fig. 1, the new structure roller-mill bearing retainer that uses iron instead of copper of the present utility model comprises outer ring 1, inner ring 2, secondary roller 3 and two retainers 4.Wherein the structure of outer ring 1, inner ring 2 is known technology, and its characteristics are to be equipped with respectively in each pocket hole of retainer 4 roller 3 of end face band depression 5, on the retainer 4 with roller 3 end faces on depression 5 corresponding parts connecting lever 6 is arranged, constitute B-mode pressing cage.Connecting lever 6 on the retainer 4 embeds respectively in the depression 5 on it corresponding roller 3 end faces.During assembling, retainer can break away from bearing enclose and independent assembling, be that aligning roller one strikes in the retainer pocket hole of can packing into gently from outside to inside with beautiful spotflower herb, but can not all fill the pocket hole, each sheet retainer reserves 1 in the diametric(al) position---2 pocket holes, two retainer roller assemblies of all not filling the pocket hole are packed in this bearing outer ring together with inner ring, change an angle then, in the pocket hole of reserving, aligning roller is tapped down from outside to inside again, till rolling element is filled with above-mentioned same method.

Claims

1. new structure roller-mill bearing retainer uses iron instead of copper, comprise outer ring, inner ring, between outer ring and inner ring, be equiped with 2 retainers, it is characterized in that being equiped with respectively in each pocket hole of described retainer the roller of end face band depression, on the retainer with roller end face on the depression corresponding part connecting lever is arranged, constitute B-mode retainer, the connecting lever on the retainer embeds respectively in the depression on the with it corresponding roller end face.