CN103388619A

CN103388619A - Rolling-type joint bearing

Info

Publication number: CN103388619A
Application number: CN2012101534327A
Authority: CN
Inventors: 张庆
Original assignee: Wuhu Baoyi Amusement Equipment Co Ltd
Current assignee: Wuhu Baoyi Amusement Equipment Co Ltd
Priority date: 2012-05-13
Filing date: 2012-05-13
Publication date: 2013-11-13

Abstract

The invention provides a rolling-type joint bearing comprising a spherical inner ring with an outer spherical surface, and a spherical hole outer ring with an inner spherical surface. The spherical inner ring is arranged in the spherical hole outer ring. A cylindrical hole with an axis penetrating the spherical center is arranged in the spherical inner ring. More than two annular grooves are arranged on the inner spherical surface of the spherical hole outer ring. Steel balls are arranged in the annular groove. According to the rolling-type joint bearing, with the spherical groove structure of the spherical hole outer ring and the steel balls arranged inside, the relative rotation between the spherical inner ring and the spherical hole outer ring is rolling friction. Compared with a common joint bearing with a sliding friction mode, the friction is greatly reduced, and service life is longer. The rolling-type joint bearing can bear greater rotation speeds.

Description

The rolling type joint shaft bearing

Affiliated technical field

The present invention relates to field of bearings, be specifically related to a kind of rolling type joint shaft bearing.

Background technique

Bearing is a kind of extremely common mechanical fitting, is used for determining running shaft and other part relative movement positions, and our traditional bearing only has the degrees of freedom of a direction.And equipment is various during the degrees of freedom that usually needs in the process of operation, and we can't meet the demands by common bearing; So joint shaft bearing occurred, the joint shaft bearing that we see usually is a kind of sliding bearing of special construction.Its structure is simpler than rolling bearing, it mainly is comprised of an inner ring by outer spherical surface and the outer ring by inner ball surface, can bear larger load, type and the structure different according to it, can bear radial load, axial load or radially, axial simultaneous joint load.

Because common joint shaft bearing is sliding bearing, the frictional force of its inner ring and outer ring is larger, easily damages, and generally can only be used for the lower oscillating motion of speed, slowly in the several angle scope tilts, and motion is that aligning moves.

Summary of the invention

For above problem, the invention provides a kind of when rotating the very little rolling type joint shaft bearing of frictional force.

The technical solution adopted for the present invention to solve the technical problems is: this rolling type joint shaft bearing comprises a spherical inner ring that outer spherical surface is arranged, the outer ring, ball hole that inner ball surface is arranged, described spherical inner ring is loaded in outer ring, ball hole, described spherical inner ring has an axis to cross the cylindrical hole of the centre of sphere, on the inner ball surface of outer ring, described ball hole, plural annular groove is arranged, steel ball is equipped with in the inside of described annular groove.

As preferably, outer ring, described ball hole comprises upper ring and lower ring, and described upper ring and lower ring is fixing up and down by locking element.

As preferably, described fixed block is bolt, and uniform countersunk head through hole is arranged on described pressed on ring, and described lower ring has corresponding uniform tapped hole.

Beneficial effect of the present invention is: the steel ball that be equipped with the ball recess structure of its outer ring, ball hole of this rolling type joint shaft bearing and its inside; make relatively rotating as rolling friction between spherical inner ring and outer ring, ball hole; the joint shaft bearing of relatively common sliding friction; its friction reduces greatly; wear and tear less; its longer service life, this rolling type joint shaft bearing can bear larger rotating speed simultaneously.

Description of drawings

Fig. 1 is the structural representation that closes the rolling type joint shaft bearing.

Fig. 2 is the structural representation of outer ring, ball hole.

Embodiment

The present invention is further described below in conjunction with embodiment:

As shown in Figure 1, in embodiment, described rolling type joint shaft bearing, comprise a spherical inner ring 1 that outer spherical surface is arranged, the outer ring, ball hole 2 that inner ball surface is arranged, described spherical inner ring 1 is loaded in outer ring, ball hole 2, and described spherical inner ring 1 has an axis to cross the cylindrical hole of the centre of sphere, the cylindrical hole that described axis is crossed outer ring, ball hole 2 centre ofs sphere is mounting hole, is used for installing running shaft.

As shown in Figure 2, four up and down symmetrical ring connected in stars 21 are arranged on the inner ball surface of outer ring, described ball hole 2, outer ring, described ball hole comprises pressed on ring 22, lower ring 23, and described pressed on ring 22, lower ring 23 are fixed up and down by locking element 4.Described locking element 4 is bolt, and uniform countersunk head through hole 221 is arranged on described pressed on ring 22, and described lower ring 23 has corresponding uniform tapped hole 231.Steel ball 3 is equipped with in the inside of described annular groove 21, as shown in Figure 1.

The steel ball 3 that be equipped with ball recess 21 structures of its outer ring, ball hole 2 of this rolling type joint shaft bearing and its inside, make relatively rotating as rolling friction between spherical inner ring 1 and outer ring, ball hole 2, relatively be generally the joint shaft bearing of sliding friction, its friction reduces greatly, wear and tear less, its longer service life, this rolling type joint shaft bearing can bear larger rotating speed simultaneously.

This rolling type joint shaft bearing is when mounted first to described ball recess 21 coating butters, then steel ball 3 is filled pressed on ring 22, lower ring 23 all ball recess 21, then spherical inner ring 1 is put in the inner ball surface that pressed on ring 22, lower ring 23 be combined into, then pass countersunk head through hole 221 with locking element 4 bolts and screw with tapped hole 231, pressed on ring 22, lower ring 23 are tightened together and get final product.Should be noted during assembling, pressed on ring 22, lower ring 23 with interlock suitablely, the steel ball in it in spherical inner ring 1 and ball recess 21 should have small gap, with equal free to rotate being as the criterion of inner ring 1 and steel ball 3.

Claims

1. rolling type joint shaft bearing, comprise a spherical inner ring (1) that outer spherical surface is arranged, the outer ring, ball hole (2) that inner ball surface is arranged, described spherical inner ring (1) is loaded in outer ring, ball hole (2), and described spherical inner ring (1) has an axis to cross the cylindrical hole of the centre of sphere; It is characterized in that: plural annular groove (21) is arranged on the inner ball surface of outer ring, described ball hole (2), and steel ball (3) is equipped with in the inside of described annular groove (21).

2. rolling type joint shaft bearing according to claim 1, it is characterized in that: outer ring, described ball hole comprises pressed on ring (22), lower ring (23), described pressed on ring (22), lower ring (23) are fixing up and down by locking element (4).

3. rolling type joint shaft bearing according to claim 1, it is characterized in that: described locking element (4) is bolt, uniform countersunk head through hole (221) is arranged on described pressed on ring (22), and described lower ring (23) has corresponding uniform tapped hole (231).