CN203214649U

CN203214649U - Rotary bearing

Info

Publication number: CN203214649U
Application number: CN 201320265236
Authority: CN
Inventors: 徐狄军
Original assignee: SHANGYU FENGDA BEARING Co Ltd
Current assignee: SHANGYU FENGDA BEARING Co Ltd
Priority date: 2013-05-03
Filing date: 2013-05-03
Publication date: 2013-09-25
Anticipated expiration: 2023-05-03

Abstract

The utility model discloses a rotary bearing which comprises an outer ring, an inner ring and a retainer between the outer ring and the inner ring. Two rows of ball raceways are formed between the inner ring and the outer ring. A row of balls is disposed on each row of ball raceway. The two rows of balls are disposed on two sides of the retainer. The bearing further comprises an annular bearing cover which is mounted on the bearing. By the bearing cover, dust proofing is achieved, the bearing is enabled to mount conveniently, dropping out, caused by rotation, of the bearing can be prevented effectively, and the service life of the bearing is prolonged.

Description

A kind of rolling bearing

Technical field

The utility model relates to mechanical engineering field, especially relates to a kind of rolling bearing.

Background technique

Along with science and technology development, people also come more many for the application of bearing, the axle that the rolling bearing of initial single ball will turn round and the sliding friction between the axle bed become rolling friction, thereby reduce friction loss, but the speed of ball is also along with increase under situation about running up, frictional force strengthens and causes bearing race impaired easily, thereby has reduced the working life of bearing.

At this phenomenon, some rolling bearings have appearred in the market, and this bearing is provided with double ball, reduced friction factor, increased working life, but the bearing of this structure is owing to increased ball quantity, so the easier interference that is subjected to extraneous dust impurity in use, and influence its running.

The model utility content

The utility model provides a kind of friction factor little in order to overcome the deficiencies in the prior art, is fit to the rolling rotating shaft of using under the rugged environment.

To achieve these goals, the utility model is by the following technical solutions: a kind of rolling bearing, comprise outer race, bearing inner ring and be located at retainer between the bearing inside and outside ring, be provided with double ball raceway between bearing inner ring and the outer race, be respectively equipped with row's ball on two row's ball raceways, two row's balls are located at the both sides of maintenance respectively, and this bearing also comprises the bearing cap of an annular.

As preferably, roller surface is provided with internal thread in the described outer race, and the outer ring surface of described bearing cap is provided with the outside thread with screw-internal thread fit; The outer roller surface of bearing inner ring and the inner ring surface of bearing cap are respectively equipped with the friction line that cooperatively interacts.

As preferably, the inner ring surface of described bearing cap is provided with internal thread, and the outer roller surface of bearing inner ring is provided with the outside thread with this screw-internal thread fit; The interior roller surface of described outer race and the outer ring surface of bearing cap are respectively equipped with the friction line that cooperatively interacts.

As preferably, described retainer comprises the outer side surface that is made of continuous crescent shape first recess and the inner side surface that is made of continuous crescent shape second recess.

As preferably, the spheroid of described ball for being made by silicon carbide.

As preferably, the centre of described retainer has oilhole.

As preferably, described oilhole is shaped as I-shaped or rectangle.

In sum, the utlity model has following advantage: this bearing arranges bearing cap, can protect bearing not fill in extraneous dust impurity, has prolonged the working life of bearing; The rolling rotating shaft of using under the suitable rugged environment, and friction factor is little.

Description of drawings

Fig. 1 is cross-sectional view of the present utility model.

Fig. 2 is Facad structure schematic representation of the present utility model.

Embodiment

In order to make those skilled in the art person better understand the utility model scheme, below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is carried out clear, complete description.

As shown in Figure 1, 2; a kind of rolling bearing; comprise outer race 1, bearing inner ring 2 and be located at retainer 3 between the bearing inside and outside ring; be provided with double ball raceway between outer race 1 and the bearing inner ring 2; be respectively equipped with row's ball 4, two row's balls on two row's ball raceways and be located at the both sides of retainer 3 respectively, this bearing also comprises the bearing cap 5 of an annular; this bearing cap is set protects bearing not fill in extraneous dust impurity, guarantee that bearing runs well.And this bearing cap 5 is installed on the bearing by screw-thread fit, can make installation more convenient.

Concrete, described screw-thread fit is that roller surface 11 is provided with internal thread in the described outer race 1, the outer ring surface 51 of described bearing cap 5 is provided with the outside thread with screw-internal thread fit; The outer roller surface 22 of bearing inner ring 2 and the inner ring surface 52 of bearing cap 5 are respectively equipped with the friction line that cooperatively interacts.This screw-thread fit also can be provided with internal thread for the inner ring surface 52 of described bearing cap 5, and the outer roller surface 22 of bearing inner ring 2 is provided with the outside thread with this screw-internal thread fit; The interior roller surface 11 of described outer race 1 and the outer ring surface 51 of bearing cap 5 are respectively equipped with the friction line that cooperatively interacts.Anchor ring of bearing cap is provided with screw-thread fit, and join strength is provided, and another anchor ring is provided with frictional fit, prevents that bearing from rotating, and therefore, bearing cap is connected on the bearing securely.

As shown in Figure 2, described retainer 3 comprises by outer side surface and inner side surface, this outer side surface is made of continuous crescent shape first recess 31, this inner side surface is made of continuous crescent shape second recess 32, and the excircle ball of described double ball is included crescent shape first recess 31 in, and the inner circumference ball is then included in crescent shape second recess 32, each recess holds a ball, when it rolled, recess and ball were worked in coordination, and have reduced friction.

The spheroid of described ball 4 for being made by silicon carbide, this material is high temperature resistant, wear-resisting, corrosion-resistant, characteristics such as oil-free self lubrication prolong working life of ball, thus the working life of bearing.

For the ease of the maintenance in later stage, keep the bearing friction reducing effect, the centre of described retainer 3 has oilhole, can add lubricant oil by this oilhole.

Described oilhole is shaped as I-shaped, in like manner also can be rectangle in other embodiments, and the oilhole of these two kinds of shapes can conveniently add lubricant oil.

Obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite before not making creative work should belong to the scope that the utility model is protected.

Claims

1. rolling bearing, comprise outer race (1), bearing inner ring (2) and be located at retainer (3) between the bearing inside and outside ring, be provided with double ball raceway between outer race (1) and the bearing inner ring (2), be respectively equipped with row's ball (4) on two row's ball raceways, two row's balls are located at the both sides of retainer (3) respectively, and it is characterized in that: this bearing also comprises the bearing cap (5) of an annular.

2. a kind of rolling bearing according to claim 1, it is characterized in that: the interior roller surface of described outer race (1) (11) is provided with internal thread, and the outer ring surface (51) of described bearing cap (5) is provided with the outside thread with screw-internal thread fit; The outer roller surface (22) of bearing inner ring (2) and the inner ring surface (52) of bearing cap (5) are respectively equipped with the friction line that cooperatively interacts.

3. a kind of rolling bearing according to claim 1, it is characterized in that: the inner ring surface (52) of described bearing cap (5) is provided with internal thread, and the outer roller surface (22) of bearing inner ring (2) is provided with the outside thread with this screw-internal thread fit; The interior roller surface (11) of described outer race (1) and the outer ring surface (51) of bearing cap (5) are respectively equipped with the friction line that cooperatively interacts.

4. according to each described a kind of rolling bearing among the claim 1-3, it is characterized in that: described retainer (3) comprises the outer side surface that is made of continuous crescent shape first recess (31) and the inner side surface that is made of continuous crescent shape second recess (32).

5. a kind of rolling bearing according to claim 1 is characterized in that: the spheroid of described ball (4) for being made by silicon carbide.

6. a kind of rolling bearing according to claim 4, it is characterized in that: the centre of described retainer (3) has oilhole.

7. a kind of rolling bearing according to claim 6, it is characterized in that: described oilhole is shaped as I-shaped or rectangle.