CN103244551A

CN103244551A - Tapered thrust bearing

Info

Publication number: CN103244551A
Application number: CN2013101683275A
Authority: CN
Inventors: 冯立友
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2013-08-14

Abstract

The invention discloses a tapered thrust bearing which comprises an upper ring 1, a lower ring 2, a plurality of tapered rollers 3, a plurality of small thrust bearings 4 and a middle ring 5 as shown in graph 1, wherein tapered roller surfaces are symmetrically designed at the upper ring and the lower ring and are in contact with the tapered surfaces of the tapered rollers for moving, and peaks of the tapered surfaces of the upper ring, the lower ring and the tapered rollers are concentrated at a center point O of the bearing. The pure rolling of a contact stress surface is ensured, center lines of the rollers are vertical to the center line of the bearing and intersect with the center line of the bearing at the center point O of the bearing, the large ends of the tapered rollers are designed to be cones and are jointed with the inner ring of the small thrust bearing, the plurality of small thrust bearings are fixedly arranged on the inner side of the middle ring at equal intervals and are matched with the tapered rollers, and the radius of the middle ring is designed to ensure that the small thrust bearings are tightly jointed with the cones at the large ends of the tapered rollers and further ensure that a tapered rolling body is positioned in an inherent pure rolling rollway nest.

Description

A kind of circular cone thrust-bearing

Technical field

The present invention proposes a kind of new technological scheme to manufacturing and designing of thrust-bearing, and its product is used for various machineries.

Background technique

One, thrust-bearing is wanted bearing axial pushing force, usually the rolling element of bearing need be at the circular movement of doing perpendicular to the plane of axle around the axle center, the roller that adopts has spherosome, cylindrical body, cone or spheroid etc., more than all, except cone, the raceway of roller must play the guiding role to the motion of roller, will certainly increase the burden of bearing like this, increases inner friction.

Two, the cone roller can not need leading role to center on the axle center to make circular movement in the circular cone thrust-bearing, but because the taper inclined-plane is stressed, the power of some decomposition passes the large end face to taper, therefore designed the button string of raceway, the effect of button string does not play the guiding role yet, but the transmission of offsetting radial force, the tram that keeps roller, since stressed and have relative movement, so also will certainly increase the burden of bearing, increase inner friction.

Three, from considering with the harmonic motion aspect, the circular cone thrust-bearing is better than the thrust-bearing of other kinds, and the axial power of decomposing of the force rate of radially decomposing in the circular cone thrust-bearing is much smaller after all.But the friction between button string and the roller also be one can not an irrespective difficult problem, roller and Shang Quan, what realize between the circle down is pure rolling, what roller and detaining was realized between the string but is pure slip.

Summary of the invention

One, in order to overcome circular cone thrust-bearing roller large end face and the problem of detaining string (rib) sliding friction, the present invention proposes a cover combination solution, as Fig. 1 a small-sized thrust-bearing is installed between tapered roller large end face and button string.

Two, a kind of circular cone thrust-bearing of the present invention, as Fig. 1, comprise circle 1, enclose 2 down, some tapered rollers 3, some small-sized thrust-bearings 4, centre circle 5, Shang Quan and following circle symmetric design tapered raceway face, with tapered roller conical surface contact movement, the summit of three's conical surface concentrates on the central point 0 of bearing.Guarantee to contact the pure rolling of stress surface, and the center line of roller is perpendicular to the center line of bearing, intersect at bearing centre point O, the big end of tapered roller is designed to cone and is connected with small-sized thrust-bearing inner ring, inboard and the some small-sized thrust-bearings of the supporting equidistant fixed installation of tapered roller of centre circle, the outer ring of small-sized thrust-bearing is fixed on the centre circle, inner ring is connected with tapered roller, the radius size of design centre circle closely is connected with the cone of the big end of tapered roller to guarantee small-sized thrust-bearing, and guarantees that the circular cone rolling element is on its intrinsic pure rolling raceway.Centre circle and small-sized thrust-bearing can be brought into play the partial function of retainer, also can design other settings that have the retainer function on the centre circle.

Three, the present invention has just solved the sliding friction problem of circular cone rolling element large end face with the button string, can not realize the rolling fully of bearing inside, adopted small-sized thrust-bearing after all, small-sized thrust-bearing the inside still exists the same problem that the present invention will solve, have friction, but effect of the present invention is apparent.

Description of drawings

Fig. 1 is simplified schematic diagram of the present invention.

Claims

1. a circular cone thrust-bearing is the novel thrust-bearing of inventing on circular cone thrust-bearing basis, it is characterized in that: Shang Quan and following circle symmetric design tapered raceway face, the some tapered rollers of middle installation, three's conical surface summit concentrates on the central point of bearing, guarantee to contact the pure rolling of stress surface, and the center line of roller is perpendicular to the center line of bearing, intersect at central point, the big end of some tapered rollers is designed to cone, design has centre circle between Shang Quan and the following circle, on the centre circle with the some small-sized thrust-bearings of the supporting fixed installation of tapered roller, the outer ring of small-sized thrust-bearing is fixed on the centre circle inboard, the inner ring of small-sized thrust-bearing closely is connected with the cone of the big end of tapered roller, to offset circular cone rolling element radial force and to keep realizing rolling between rolling element and the centre circle contact internal friction of minimizing bearing.