CN105673708A

CN105673708A - Rolling body full-surface contact bearing

Info

Publication number: CN105673708A
Application number: CN201610245873.8A
Authority: CN
Inventors: 鲍玉冬; 胡冬冬; 向敬忠
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2016-04-20
Filing date: 2016-04-20
Publication date: 2016-06-15

Abstract

The invention discloses a rolling body full-surface contact bearing. The rolling body full-surface contact bearing is composed of an outer ring, an outer ring inner rollway, a rolling body, a holder, an inner ring outer rollway, a lubricating oil tank and an inner ring. The rolling body is in two-point contact with the inner ring outer rollway and is in two-point contact with the outer ring inner rollway, and the inner ring outer rollway and the outer ring inner rollway are separated through the holder. The outer ring inner rollway and the inner ring outer rollway of the bearing are of an asymmetric V-shaped structure, the inner ring and the outer ring each have two different inclination angles, and the outer ring inner rollway and the inner ring outer rollway are axisymmetric. The lubricating oil tank is formed by a clearance between the inner ring outer rollway and the rolling body. The rolling body does rotary rolling motion in the rollways and can be in full-surface contact with the rollways, the frictional wear of the surfaces of the rolling body is reduced accordingly, and temperature rise is reduced.

Description

A kind of rolling element full surface contact bearing

Technical field

The present invention relates to field of mechanical structure design, be specifically related to a kind of novel bearing.

Background technology

Ball bearing is most important mechanical basic part, and its major function is to support machinery rotary body, reduces the coefficient of friction in its motor process, and ensures its rotating accuracy.

Bearing, as a kind of important drive disk assembly, is widely used in every field. For ball bearing, the main cause of its inefficacy be bearing in the course of the work, rolling element complicated movement and uncontrollable, cause eroded area to be relatively fixed, cause rolling element abrasion aggravation, cause bearing performance decline until lost efficacy.

By the known a kind of Multi-contact ball bearing of CN104956105A, its multiple spot performance guarantees bottom the rolling surface of ball under acting on big radial load effect with inner race track and also can prevent the damage of rolling surface of ball when part contact near it, but cannot be avoided rolling element in rotation process contact wear track concentration and affect the durability of rolling element.

By the known angular contact ball bearing of a kind of grease lubrication of CN105209773A, though the lubrication considered in rolling element motor process that this invention is careful, it is not solved by the problem that rolling element causes rolling element to lose efficacy with Internal and external cycle contact wear face Relatively centralized.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of novel bearing, increase the contact area of rolling element and raceway, improve the lubricant effect of bearing, increase the service life of bearing.

The technical solution adopted in the present invention is: include raceway 2 in outer ring 1, outer ring, rolling element 3, retainer 4, inner ring outer raceway 5, inner ring 6, oil-way 7. With general bearing Internal and external cycle arc raceway the difference is that, the Internal and external cycle raceway of this novel bearing is asymmetric V-arrangement, rolling element and Internal and external cycle raceway are two-point contact respectively, contact point is A, B, C, D respectively, inclination alpha and the β of the outer raceway of inner ring are unequal, in outer ring, raceway inclination alpha ' and α are equal, and β ' and β is equal, and bearing internal external coil structures is about rolling element axial symmetry. Inner ring is outer an oil-way between raceway and rolling element.

Compared with prior art, the invention has the beneficial effects as follows Asymmetric V-type bearing internal external circle roller path structure, rolling element and inside and outside raceway is made to come in contact at 2, can reduce because of the contact area area of raceway stand under load generation elastic deformation, improve the stress distribution of contact area, making under rolling element state under arms can automatic turning, contact area covers whole spherome surface, form rolling element full surface contact, greatly reduce the cycle-index of rolling element surface contact stress, effectively reduce the fretting wear on rolling element surface, when meeting the contact of rolling element full surface, meet the vibratory response requirement that bearing produces due to rolling element rotation, consider the lubrication failure that the slip that rolling element rotary roll produces causes Bearing inner temperature rise and temperature rise to cause simultaneously, the temperature under rolling element service state is effectively reduced by the contact of full surface, Asymmetric V-type raceway can also improve greasy property, the mode utilizing structure trapped fuel is supplemented because oil film breakdown causes lubrication failure, this structure can be effectively improved bearing reliability and fatigue life.

Accompanying drawing explanation

Accompanying drawing 1 is the front view of this novel bearing.

Accompanying drawing 2 is the sectional view of this novel bearing.

Accompanying drawing 3 is the partial enlarged drawing E of this novel bearing.

Accompanying drawing 4 is the partial enlarged drawing F of this novel bearing.

Detailed description of the invention

Below in conjunction with accompanying drawing, patent of invention is further illustrated.

If Fig. 1 is rolling element full surface contact bearing front view, it is made up of raceway 2, rolling element 3, retainer 4, the outer raceway 5 of inner ring, inner ring 6 in outer ring 1, outer ring.

Such as Fig. 2 and partial enlarged drawing E, F, by raceway 2, rolling element 3, retainer 4, inner ring outer raceway 5, inner ring 6, oil-way 7 in outer ring 1, outer ring. The Internal and external cycle raceway of this novel bearing is asymmetric V-arrangement, and the Internal and external cycle raceway of rolling element and bearing is two-point contact, and contact point is A, B, C, D respectively. Inclination alpha and the β of the outer raceway of inner ring are unequal, in outer ring, raceway inclination alpha ' and α are equal, β ' and β is equal, bearing internal external coil structures is about rolling element axial symmetry, rolling element does rotary roll motion in raceway, produces Full connected motion with raceway, increases friction area, decrease the abrasion on rolling element surface, thus adding the life-span of bearing. Inner ring is outer an oil-way between raceway and rolling element, it is possible to better store lubricating oil, improves the lubricant effect of bearing.

Above-described is only that technical scheme under thinking of the present invention belongs to scope and is not limited merely to above-described embodiment, and the technical scheme under all genus thinking of the present invention belongs to protection scope of the present invention.

Claims

1. a rolling element full surface contact bearing, its composition includes raceway in outer ring, inner ring, outer ring, inner ring outer raceway, rolling element, retainer, oil-way, it is characterized in that: in described outer ring, raceway is Asymmetric V-type face: the outer raceway of described inner ring is Asymmetric V-type face: described rolling element is arranged in the outer raceway of inner ring and outer ring between raceway, and separates with retainer: described oil-way is the gap between rolling element and the outer raceway of inner ring.

2. a kind of full surface of rolling element according to claim 1 contact bearing, it is characterised in that: in bearing outer ring, raceway is Asymmetric V-type, and the outer raceway of bearing inner race is Asymmetric V-type.

3. the inclination alpha of the outer raceway of inner ring and β are unequal, and in outer ring, raceway inclination alpha ' and α are equal, and β ' and β is equal, bearing internal external circle roller path structure axial symmetry.

4. a kind of full surface of rolling element according to claim 1 contact bearing, it is characterised in that: the centrage of bearing is with the centrage of rolling element not point-blank.

5. a kind of full surface of rolling element according to claim 1 contact bearing, it is characterised in that: oil-way is arranged between rolling element and the outer raceway of inner ring.