CN103075418A

CN103075418A - Rolling bearing provided with main and auxiliary rollers

Info

Publication number: CN103075418A
Application number: CN201110355191XA
Authority: CN
Inventors: 何建中
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2013-05-01

Abstract

The invention relates to a rolling bearing provided with main and auxiliary rollers. The bearing is characterized in that an auxiliary roller is arranged between main rollers. The bearing has two main structural characteristics that: the main rollers and the auxiliary roller are arranged alternately, such that rolling surfaces of the main rollers only contact the rolling surface of the auxiliary roller and the inner and outer rings, and do not contact other parts of a retainer; and the diameter of the auxiliary roller is smaller than that of the main rollers, such that the auxiliary roller does not contact the inner and outer rings of the bearing. When the beating rotates, the rolling direction of the auxiliary roller is constantly opposite to that of the main rollers, and the movement directions of the main and auxiliary rollers are constant. The main rollers and the auxiliary roller have only a relative rolling relationship but no relative sliding relationship. Therefore, under normal condition, no sliding friction force exists between the main and auxiliary rollers, such that sliding friction force of the rolling bearing can be eliminated to a maximal extent.

Description

Be provided with the rolling bearing of major-minor roller

Technical field:

Mechanical parts.

Background technique:

Rolling bearing in the past, no matter without retainer, retainer is still arranged, at bearing during to a certain direction rotation, its same axially on, the rotating direction of roller all is unidirectional, we can this bearing that only has single rolling mode referred to as: " single roll-type rolling bearing ", there is larger force of sliding friction in " single roll-type rolling bearing ".For without retainer, mainly be have very large force of sliding friction between the adjacent rollers, for the rolling bearing that retainer is arranged, be because the relative movement between rolling element and the retainer is still sliding type, so that still there is the defective of larger force of sliding friction in bearing; The rolling bearings of arranging also are difficult to overcome defects more.In order to overcome these defectives of rolling bearing, I attempt to design a kind ofly has the rolling bearing of major-minor roller to replace it, to overcome the defects of " single roll-type rolling bearing ", to improve the mechanical motion efficiency of rolling bearing.

Summary of the invention:

Essential characteristic: " being provided with the rolling bearing of major-minor roller " of the present invention, its core characteristics are to be provided with " auxiliary roll " between main roller.Its main structure has two: one, is spaced each other between main roller and auxiliary roll, and the rolling surface of main roller is only contacted with Internal and external cycle with the rolling surface of auxiliary roll, does not contact with other position of retainer; The 2nd, the diameter of auxiliary roll does not contact auxiliary roll less than the diameter of main roller with inner ring with the outer ring of bearing.When bearing rotates, the rotating direction of the auxiliary roll all the time rotating direction with main roller is opposite, but the moving direction of point of contact is consistent between the major-minor roller, only have relative rolling relation between the two, do not have the relative sliding relation, therefore, under normal circumstances, major-minor roller does not have force of sliding friction, so, can eliminate to greatest extent the force of sliding friction of rolling bearing.

Described auxiliary roll is mounted on the retainer, and spaced each other between the main roller, and its diameter is less than the small roller of the diameter of main roller.Its rolling surface does not contact with inner ring with the outer ring of bearing, can make it not bear main gravity (main gravity is only born by main roller), when bearing is rotated, the rotating direction of the auxiliary roll all the time rotating direction with main roller is opposite, but the moving direction of point of contact is consistent, make and only have relative rolling between the two, there is not relative sliding, the force of sliding friction of bearing to greatest extent, also can realize zero windage contact between the two, can increase substantially the bearing rotary dynamic stability, reduce the bearing rotary moving noise.

Embodiment:

Auxiliary roll is installed on the retainer, and the relation of it and retainer is slided, and therefore, is making and is installing, and it is firm to consider to install, and also will take into account the coefficient of sliding friction that reduces between them.

Major-minor roller shape complementarity: for the force of sliding friction between eliminate roller and the lasso shelves limit face; the profile of major-minor roller point of contact must be complementary; they are pind down and position stability mutually; so that roller can not run into a grade limit face when bearing revolves round the sun, thereby avoid so produce unusual force of sliding friction.If the profile of main roller is olivary, the profile of auxiliary roll then is the class dumbbell-like shape, otherwise then anti-; If main roller is columniform, auxiliary roll also is columniform, but must there be outstanding bar shaped ring on wherein on one side the surface that they contact with each other, and corresponding another side with it then must have complementary with it strip groove complementary with it; If main roller is spheroidal, then auxiliary roll must be the ditch ring of half ball cover shape, could be complementary with it.

For bearing at the different operating environment, operating temperature changes when causing volume of part to expand with heat and contract with cold, and makes the zero windage contact that can keep suitable between the major-minor roller, can the elasticity original paper be set at the relevant position that auxiliary roll is installed, with automatic adjusting play elasticity.

Claims

Essential characteristic:

Rolling bearing in the past, no matter without retainer, retainer is still arranged, at bearing during to a certain direction rotation, its same axially on, the rotating direction of roller all is unidirectional, we can this bearing that only has single rolling mode referred to as: " single roll-type rolling bearing ", there is larger force of sliding friction in " single roll-type rolling bearing ".For without retainer, mainly be have very large force of sliding friction between the adjacent rollers, for the rolling bearing that retainer is arranged, be because the relative movement between rolling element and the retainer is still sliding type, so that still there is the defective of larger force of sliding friction in bearing; The rolling bearings of arranging also are difficult to overcome defects more." being provided with the rolling bearing of major-minor roller " of the present invention, its core characteristics are to be provided with " auxiliary roll " between main roller.Its main structure has two: one, is spaced each other between main roller and auxiliary roll, and the rolling surface of main roller is only contacted with Internal and external cycle with the rolling surface of auxiliary roll, does not contact with other position of retainer; The 2nd, the diameter of auxiliary roll does not contact it less than the diameter of main roller with inner ring with the outer ring of bearing.When bearing rotates, the rotating direction of the auxiliary roll all the time rotating direction with main roller is opposite, but the moving direction of point of contact is consistent between the major-minor roller, only have relative rolling relation between the two, do not have the relative sliding relation, therefore, under normal circumstances, major-minor roller does not have force of sliding friction, so, can eliminate to greatest extent the force of sliding friction of rolling bearing.

Protection domain:

1. its core characteristics are to be provided with " auxiliary roll " between main roller;
2. be spaced each other between main roller and auxiliary roll, the rolling surface of main roller is only contacted with Internal and external cycle with the rolling surface of auxiliary roll, do not contact with other position of retainer;
3. the diameter of auxiliary roll does not contact it less than the diameter of main roller with inner ring with the outer ring of bearing;
4. the profile of major-minor roller point of contact must be complementary, and they are pind down and position stability mutually, makes winner's roller can not run into second gear limit face when bearing revolves round the sun, thereby avoid so produce other force of sliding friction.