CN203822846U

CN203822846U - Rolling bearing

Info

Publication number: CN203822846U
Application number: CN201420138781.6U
Authority: CN
Inventors: 王志东
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-25
Filing date: 2014-03-25
Publication date: 2014-09-10
Anticipated expiration: 2024-03-25

Abstract

The utility model relates to a rolling bearing. The rolling bearing comprises an outer ring and an inner ring which are coaxially arranged, as well as a retainer between the outer ring and the inner ring, wherein at least two adjacent rollers are axially arranged in each spacing window of the retainer and a concave part is formed in each of end surfaces which are directly opposite to each other of the adjacent rollers; lubricating grease or lubricating oil can be contained in the concave part. According to the rolling bearing, a high carrying capacity is achieved, the wear condition of each part is effectively alleviated and the service life of the rolling bearing can be effectively prolonged.

Description

Rolling bearing

Technical field

The utility model relates to a kind of rolling bearing, especially a kind of rolling bearing in each partition window of retainer with the roller of at least two axial adjacent layouts.

Background technique

Especially in heavy-duty applications occasion, require very high to the load carrying capacity of bearing.In order to improve the load carrying capacity of bearing, multiple design proposal has been proposed in prior art, for example the roller designs of rolling bearing is become to have slender type cylindrical configuration.

Though the rolling bearing this with the roller of slender type cylindrical configuration can improve the load carrying capacity of bearing, in using, finds that it easily damages, and especially first retainer often damages, and causes bearing short working life.More specifically, first the cross bar of the formation partition window in retainer lost efficacy due to excessive wear near two ends place, trace it to its cause, this is exactly because the slender type structure of cylindrical roller causes, because bearing can run into the situation of stand under load inequality under in working order unavoidably, for example one end is stressed compared with large and disequilibrium in the axial direction for bearing roller, now roller end is larger with the degree of retainer generation friction with respect to intermediate portion, and roller is longer in the axial direction, more obvious near the wearing and tearing of end.

For this situation, improved technological scheme is proposed in american documentation literature US3586406A.Fig. 1 shows the structure after disclosed a kind of improvement in this patent documentation.As shown in Figure 1, on each cross bar of retainer, be formed with the part of two radially outward projections, contact with roller by these convex portions, can prevent to a certain extent that like this retainer near end, sharp wear occurring.But in this improvement project, on the one hand, the leptosomatic in the axial direction structure of roller does not change, and that is to say that roller length is in the axial direction still longer, above-mentioned sharp worn root occurs like this and still exist; On the other hand, the processing technology of retainer cross bar is complicated, and cost of production improves.

Model utility content

Therefore, the purpose of this utility model is to overcome above-mentioned defect of the prior art, and a kind of rolling bearing that improves wear condition between parts is provided.

The purpose of this utility model is achieved through the following technical solutions: a kind of rolling bearing, comprise coaxially arranged outer ring and inner ring, retainer between outer ring and inner ring, in each partition window of retainer along being axially arranged with at least two adjacent rollers, and on the mutual direct relative end face of adjacent rollers, have recess, this recess can hold lubricating grease or lubricant oil.

Here, roller is preferably cylindrical roller.In addition, the recess on end face can be spiral groove, can be also multiple holes.

According to rolling bearing of the present utility model, by structural improvement, not only there is higher bearing capacity, and effectively improved the wear condition between parts, can effectively extend the working life of rolling bearing.

Brief description of the drawings

Further describe the specific embodiment according to rolling bearing of the present utility model below in conjunction with accompanying drawing, wherein:

Fig. 1 has schematically shown a kind of existing rolling bearing;

Fig. 2 has schematically shown according to the rolling bearing of the utility model one preferred embodiment;

Fig. 3 has specifically illustrated an exemplary edge face structure according to roller in the rolling bearing of the utility model one preferred embodiment; And

Fig. 4 has specifically illustrated another the exemplary edge face structure according to roller in the rolling bearing of the utility model one preferred embodiment.

Embodiment

Fig. 2 has schematically shown according to the rolling bearing of the utility model one preferred embodiment.As shown in Figure 2, rolling bearing comprises outer ring 1, inner ring 4, retainer 2.Inner ring 4 arranges coaxially with outer ring 1, and retainer 2 has along circumferential multiple partition windows of distribution.In each partition window of retainer 2, be provided with two rollers 3 of adjacent layout vertically.Roller 3 is radially gone up between outer ring 1 and inner ring 4.As shown in the region C in Fig. 2, two rollers 3 are adjacent one another are in the axial direction.From significantly different in prior art be, in the preferred embodiment of the present utility model, be provided with two rollers 3 of adjacent layout vertically, but not single slender type roller of the prior art, effectively reduce like this axial length of single roller, can fundamentally solve over worn problem in prior art.Meanwhile, because two rollers 3 are adjacent one another are in the axial direction, therefore still there is generally higher load-carrying ability.

Be understandable that, because two rollers 3 are directly adjacent one another are in the axial direction, therefore there is larger friction torque between two rollers of bearing run duration.For this reason, need on the adjacent face of roller 3, be provided with recess, come storing lubricating grease or lubricant oil, thereby effectively improve the friction between end face.

Specifically, Fig. 3 and Fig. 4 show respectively according to the exemplary edge face structure of roller in the rolling bearing of the utility model preferred embodiment.As shown in Figure 3, can on the end face of roller 35, be provided with helical groove 6.As shown in Figure 4, also can on the end face of roller 35, be provided with multiple shrinkage pools 7.

Here, it is pointed out that specifically described embodiment is exemplary above, should not be construed as restriction of the present utility model.For example, can be along being axially adjacent to arrange three or more rollers 3 in the partition window of retainer, groove 6 or shrinkage pool 7 on the end face 5 of roller 3 can adopt various layout.

Although specifically described embodiment of the present utility model with reference to specific embodiment, it will be understood by those skilled in the art that in the situation that not departing from the utility model instruction, can make in form and details various changes to embodiment of the present utility model.Thereby scope of the present utility model is defined by the claims, and comprise all changes in the scope that falls into claim equivalent.

Claims

1. a rolling bearing, comprise coaxially arranged outer ring and inner ring, retainer between described outer ring and described inner ring, it is characterized in that, in each partition window of described retainer along being axially arranged with at least two adjacent rollers, and on the mutual direct relative end face of described adjacent roller, have recess, described recess can hold lubricating grease or lubricant oil.

2. rolling bearing according to claim 1, is characterized in that, described roller is cylindrical roller.

3. rolling bearing according to claim 1, is characterized in that, described recess is spiral groove.

4. rolling bearing according to claim 1, is characterized in that, described recess is multiple holes.