RU171139U1 - Friction bearing - Google Patents

Abstract

The utility model relates to the field of mechanical engineering, in particular to non-separator type rolling bearings. The technical result is achieved in a rolling bearing containing concentrically arranged rings with raceways and rolling elements located between the raceways and in contact along the contact area with two raceways, while the rolling bodies are made with a conical shape error and are arranged relative to each other with alternating larger the base of the cone with a smaller base of the cone with the ability to compensate for the error of the contacting rolling elements. The technical result is to increase the efficiency of the bearing.

Description

The utility model relates to the field of mechanical engineering, in particular to non-separator type rolling bearings.

A radial roller non-separating roller bearing is known, comprising inner, outer rings and rollers, on the flange of the rings and end sections of the elongated rollers of which involute spur gears are engaged that are engaged with each other and act as a cage, while planetary gear mechanisms are formed in the end sections of the bearing with a mirror image of their teeth and depressions, the number of teeth satisfying the conditions of the assembly (patent RU No. 2135851, IPC F16C 19/22, publ. 1999).

The disadvantage of the bearing is the complexity of the design and an increase in the axial dimensions of the bearing.

Known full-complement roller bearing containing inner and outer rings and roller rolling bodies (with the same or different diameters), on which, in addition to the raceways, involute spur gears with equal or opposite displacement are engaged with each other. The outer and inner rings are made integral, and the rolling rolling elements are prefabricated, consisting of parts with cylindrical working surfaces and parts with gear rims, joined to each other (patent RU No. 2331000, IPC F16C 19/22, publ. 2008).

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

A radial roller non-separating roller bearing is known, comprising outer and inner rings with raceways and rolling bodies located between them, made in the form of two-stage type rollers, two sections of large stages of upper stage rollers with a gap enter the grooves of the lower stages of the lower tier rollers, with diameters the three sections of the large steps of the lower tier in contact with the three sections of the lower steps of the rollers of the upper tier are equal, and all the rollers of both the upper and lower tiers are in contact with each other and raceways in three lines, forming a power single closed annular set of rollers of the upper and lower tiers (patent RU No. 2334137, IPC F16C 19/22, F16C 19/28, F16C 33/34, F16C 33/36, publ. . 2008). The bearing, on the outer ring of which there are two triangular bores for the raceways of two spherical sections made on the outside of the large steps of the upper tier rollers, which are in contact with the contact spot in the area of the triangular bore - along the raceways equal in diameter to the raceway of the outer ring , while along the axis of the rollers of the lower tier are two thrust bearings made, for example, in the form of a ball, which are located in cups made, for example, of carbon fiber, and in contact e with the surfaces of the high sides of the inner ring and thrust ring (patent RU No. 2384765, IPC F16C 19/22, F16C 19/28, F16C 33/34, F16C 33/36, publ. 2010).

The disadvantage of bearings is a complex device, as well as uneven deformation of the rolling elements due to abrasion during use, resulting in "troughs" filled with excess lubricant, which creates a viscous resistance, worsening the performance of the bearing.

Known rolling thrust bearing with tapered rollers full complement, containing free and tight rings, rolling bodies located between them, made in the form of tapered rollers arranged in two rows, forming a single closed annular set of rollers, while the plane of the linear contacts of the rollers of one row with the second passes, for example, along the longitudinal axis of symmetry of the thrust bearing (patent RU No. 2349803, IPC F16C 19/22, F16C 19/32, publ. 2009). A bearing, all tapered rollers of which contain a coaxial through hole in which a grease nipple is mounted on the side of the smaller diameter of the roller and a rod is rigidly mounted behind the thrust bearing, for example, made of cermet, and the spherical head of the thrust bearing is made with eccentricity (patent RU No. 2384764, IPC F16C 19/22, F16C 19/32, F16C 33/34, publ. 2010).

The disadvantage of bearings is a complex device, as well as uneven deformation of the rolling elements due to abrasion during use, resulting in "troughs" filled with excess lubricant, which creates a viscous resistance, worsening the performance of the bearing.

A roller bearing containing outer and inner rings, one of which is made split along the vertical axis of symmetry of the bearing, equipped with cylindrical raceways with flanges on both sides of the raceways, rolling elements in the form of cylindrical rollers having a spherical shape at the ends, a separator for separating bodies of rolling, pairing of raceways with flanges, made in the form of sections of curved surfaces, with the same radii equal to the radius of the sphere of the ends of the rollers (patent RU No. 2582630, IPC F16C 19/22 , F16C 19/26, F16C 33/34, F16C 33/58, publ. 2016).

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

Known rolling bearings, made in the form of angular contact bearings installed in the housing, containing a retaining ring, outer and inner rings, all-metal bearing balls (or rollers) and separating balls (or rollers) having solid lubricating materials on the surface, located alternately with bearing rolling elements (application for invention RU No. 96101411, IPC F16C 19/14, publ. 1998).

The disadvantage of the support is a smaller, in comparison with a non-separating rolling bearing, the number of bearing rolling elements, additional friction forces between the bearing rolling elements and the separating rolling elements.

Known roller bearing containing an inner ring and an outer ring with raceways and rolling elements of the rolling body in the form of cylindrical rollers, while the raceway of the inner ring is made in the form of a surface of a one-cavity hyperboloid, the surface of the raceway of the outer ring repeats the surface of the raceway of the inner ring and has with it the same in magnitude, but different in sign, curvature (patent RU No. 2588176, IPC F16C 19/22, F16C 19/34, F16C 33/34, F16C 33/58, 02/10/2016). The bearing, the raceway of the inner and outer rings of which is equidistant over the entire width of the rings, and the center of the bearing is located on a plane dividing the width of the bearing in half (patent RU No. 2585437, IPC F16C 19/22, F16C 19/34, F16C 33/34, F16C 33 / 58, 02/10/2016).

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

A rolling bearing with step rollers is known, comprising an outer and an inner ring with raceways, rolling bodies installed between them, made in the form of two-stage rollers installed in the separator sockets, steps of a larger diameter contacting the race track of the outer ring of the bearing, and steps of a smaller diameter contacting raceway of its inner ring (patent RU No. 2553489, IPC F16C 19/22, F16C 33/36, 02/10/2015).

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

Known rolling element bearings angular contact, consisting of inner and outer bearing rings and rolling elements, which are cylindrical rollers and balls located in the first pair of annular grooves (patent RU No. 2529931, IPC F16C 19/20, F16C 19/49, 10.02. 2014).

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

The closest is a non-separating rolling bearing, containing concentrically or parallel to each other located rings or disks with raceways located on them, each of which is located on one of the rings or disk, between which the rolling bodies are located so that each of the rolling bodies is in contact the contact area with only one of the raceways and contacts on the contact areas with at least two rolling bodies in contact with the other of the raceways located on the other sealing rings or disc. Each of the rolling elements in contact with the raceway is in contact with at least two rolling elements in contact with the other of the raceways located on the other ring or disk (Patent RU No. 2269685, IPC F16C 19/50, 02/10/2006 )

The disadvantage of the bearing is the uneven deformation of the rolling elements due to abrasion during use, resulting in the formation of "troughs" filled with excess lubricant, which creates a viscous resistance, impairing the performance of the bearing.

The objective of the proposed technical solution is to ensure a uniform gap between the rolling bodies and to prevent an increase in play in the rolling bearing during its operation.

The technical result is to increase the efficiency of the bearing.

The technical result is achieved in a rolling bearing containing concentrically arranged rings with raceways and rolling elements located between the raceways and in contact along the contact area with two raceways, while the rolling bodies are made with a conical shape error and are arranged relative to each other with alternating larger the base of the cone with a smaller base of the cone with the ability to compensate for the error of the contacting rolling elements.

The essence of the design consists in the sequential combination of rolling elements with equidistant surfaces (complementary in the form of errors in the longitudinal direction), in particular for rolling elements of a non-separating bearing with contact surfaces made in the longitudinal direction with an error of "conical shape" within the tolerance, located relative to each other alternating a larger cone base with a smaller cone base.

In this case, the error of one form is compensated by the error of another form or by the equidistant arrangement of the generators of these surfaces.

“Cone-shape” is a particular type of deviation of the longitudinal section profile, in which the generators are straightforward, but not parallel (GOST 24462-83).

As a result of the compensation of the errors of some rolling elements by others, a more dense contact of the rolling friction surfaces is achieved due to the formation of contacts along the line, which avoids the plastic deformation of the rolling elements characteristic of contact at a point. The absence of plastic deformation of the rolling elements prevents an increase in the gaps between the rolling elements and an increase in play in the process of using the bearing, which allows to extend the service life and increase the bearing performance.

In FIG. 1 shows a single row full complement ball bearing in section.

In FIG. 2 shows a contact diagram of conical rolling elements in a rolling bearing.

The rolling bearing contains concentrically arranged outer ring 1 and inner ring 2. On rings 1 and 2, raceways 3 and 4 are made, respectively. Between the outer ring 1 and the inner ring 2 are cone-shaped rolling bodies 5 (made with an error "conical"). The cone-shaped rolling bodies 5 are arranged relative to each other with alternating the larger base of the cone with the smaller base of the cone. Rolling bodies 5 in contact along the contact area with both raceways 3 and 4 are rollers mounted with the possibility of compensating for the existing (within the tolerance) error in the longitudinal direction of the "cone".

The bearing operates as follows. In the process of using the rolling bearing, the rolling elements 5 move between the working surfaces of the raceways of concentrically arranged rings 1 and 2 and in this case are in contact along the contact area with raceways 3 and 4 and with each other. As a result of mutual compensation of errors of oppositely directed cone-shaped rolling elements 5, due to the contact between the rolling elements along the line, a more dense contact of the rolling friction surfaces occurs, which avoids plastic deformation of the rolling elements and, accordingly, prevents an increase in the gaps between the rolling elements and prevents the increase play during operation of the bearing. This provides increased performance and longer bearing life.

Thus, the location in the rolling bearing between the raceways of concentrically arranged rings of rolling elements made with a cone-shaped error with alternating a larger base of the cone with a smaller base of the cone with the possibility of compensating for the error of the contacting rolling bodies, ensures an increase in bearing performance.

Claims (1)

A rolling bearing comprising concentrically arranged rings with raceways and rolling elements located between the raceways and in contact along the contact area with two raceways, characterized in that the rolling bodies are made with a cone-shaped error and are arranged relative to each other with alternating larger cone bases with a smaller base cone with the ability to compensate for the error of the contacting rolling elements.

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