CN111828469A

CN111828469A - Super-heavy-load high-speed rail bearing with spherical roller and built-in ball

Info

Publication number: CN111828469A
Application number: CN201910306265.7A
Authority: CN
Inventors: 孟萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-10-27

Abstract

The invention relates to an ultra-heavy-load high-speed rail bearing. The utility model provides a set up super heavy load high-speed railway bearing of putting ball in spherical roller, including an inner race, two half outer races, the symmetrical spherical roller of round and two asymmetric spherical rollers of circle: after the two double-half outer races are coaxially combined, the inner circumferences of the two double-half outer races form a common spherical roller track, the curvature radius of the common spherical roller track is larger than the radius of the roller circumferential track, so that the axial section of the common spherical roller track is in an elliptical structure, the middle part of the outer circumference of the inner race is provided with a circle of spherical roller track vertical to the axial lead of the bearing, the axial lead of the spherical roller arranged in the track is symmetrical to the axial lead of the bearing, two ends of the spherical roller track are respectively provided with a circle of spherical roller track, the two rows of spherical roller tracks and the vertical axial lead of the bearing form an angle of 1-20 degrees, the inner race is combined with the common spherical roller track arranged on the inner circumferences of the double-half outer races through three rows of spherical rollers to form a spherical roller bearing structure of the elliptical spherical roller track, the invention utilizes the symmetrical spherical rollers to center the ball to improve the bearing capacity and reduce, forming the super heavy-duty high-speed rail bearing.

Description

Super-heavy-load high-speed rail bearing with spherical roller and built-in ball

Technical Field

The invention relates to a high-speed rail bearing.

Background

1. At present: the high-speed rail bearing manufactured in developed countries in the world is still a tapered roller bearing manufactured by means of advanced bearing materials and process technologies, and research data show that: the mechanical structure of a tapered roller bearing has a number of fatal defects, such as:

(1) stress concentration: stress concentration at the end part of a roller of the tapered roller bearing is an inherent fatal defect which cannot be radically treated, and the common main harm is that indentation and peeling of a raceway are caused;

(2) the roller is easily skewed: the biggest inherent fatal defect of the tapered roller bearing is that the roller is easy to deflect due to uneven stress of a roller contact line in rotation, and the roller directly causes indentation and stripping of a ferrule roller path, retainer cracking or flange cracking, which often occur in a wheel shaft bearing of a heavy-duty automobile, the stress concentration of the end of the roller is reduced by adopting a method for increasing the roller convexity, the mechanical essence of the stress concentration cannot be changed, and the defect of the inherent mechanical structure cannot be fundamentally corrected in the developed countries at present;

(3) hazards caused by tapered roller contact angles:

a: because: the frictional resistance of the round roller increases with increasing contact angle, so: the increase of the roller contact angle directly leads to the increase of the friction resistance of the bearing and the reduction of the radial bearing capacity, and the starting friction resistance can be increased by 4-8 times (SKF- - -P103 page) along with the increase of the inclination angle of the roller, and the sliding friction during starting can be directly caused because: the mechanical principle of the combined load of the tapered roller bearing is realized by the size of a roller contact angle, the tapered roller bearing directly distributes the load in the radial direction and the axial direction of the bearing according to the size of the contact angle, constant axial force is directly derived to enable the axial direction and the radial direction of the bearing to be always in a set stress state, the axial force caused by the contact angle is the same as the principle of a lateral adjusting nozzle of a rocket jet engine, and when the rocket jet engine does not need the lateral adjusting nozzle to assist jet air, the lateral jet air is always harmful! The same principle is also applied to high-speed rail operation, for example: when high-speed rail is operated in a straight line for a long time without large axial load, however: the axial load derived from the tapered roller according to the set contact angle of the roller and the friction resistance and the friction heat generated by the axial load are always added to the bearing like the shadow, which directly causes the radial load of the bearing to be insufficient, the friction resistance and the friction wear to be increased meaninglessly, the friction heat to be increased and other various hazards,

b: the sliding friction of bearing gravity between the end face of the large end of the tapered roller and the flange of the ferrule is an inherent defect which cannot be corrected, and the SKF data is described as follows: because the loads acting on the flanges cannot be evenly distributed, the abrasion is increased, even the flanges are likely to be broken (SKF bearing comprehensive type page P506), not only the grease lubrication is difficult and the high-speed performance is poor, but also the bearing roller is easy to be inclined, the bearing is heated and the flanges are easy to break,

2. research and practice find that: the spherical roller bearings in centripetal form also have great drawbacks and limitations in the design of mechanical structures, among which:

A. the radius of the spherical roller track is restricted by the radius of the bearing, the radius of the spherical roller track is necessarily smaller than the radius of the bearing, the curvature of the spherical roller track is directly overlarge, the practical application range of the spherical roller track is narrow, only a circle of spherical surface with the narrow spherical surface diameter at the maximum can be utilized, therefore, the length of the roller is very short, any method for increasing the length of the roller and the contact angle of the roller can cause the thrust spherical roller bearing effect, the unnecessary increase of the axial bearing capacity and the reduction of the radial bearing capacity of the centripetal spherical roller bearing are directly caused, the friction resistance, the friction heating and the rated rotating speed of the bearing can be sharply increased, and the multiple advantages of the spherical roller bearing can not play a larger application value in a wider field,

B. at present: spherical roller bearings manufactured in various countries are two rows of rollers, and the axial lines of the two rows of rollers must form a certain angle with the vertical axis of the bearing (page P692 of SKF bearing general model), but cannot be symmetrical to the axial line of the bearing, so that: the spherical roller misses the optimal raceway range which can enable the axis of the spherical roller to be symmetrical to the axis of the bearing, and can enable the friction resistance of the roller to be minimum, the friction heating to be minimum and the bearing capacity to be maximum.

Disclosure of Invention

In view of the technical defects of the tapered roller high-speed rail bearing and the limitations of the spherical roller bearing, the invention arranges the symmetrical spherical rollers on a circle of track surface at the angle line which is vertical to the bearing axis line between two sections of asymmetrical spherical rollers, so that the axis line of the spherical roller is parallel and symmetrical to the axis line of the bearing and occupies the optimal track range in the bearing track, and a central spherical structure of the spherical roller bearing is formed, so that the spherical roller bearing has the advantages of a circular ring roller bearing and all the advantages of the spherical roller bearing, and the effects of minimum friction resistance, minimum friction heating and maximum bearing capacity are achieved, because: the spherical roller has larger radial bearing capacity and axial bearing capacity than the tapered roller when the roller contact angle is the same, so that: the invention adopts two sections of asymmetric spherical rollers or two sections of symmetric spherical rollers arranged at two ends of the center ball to bear axial load and radial load, can realize the same axial load force and smaller frictional resistance with a smaller contact angle than a tapered roller,

the invention combines the mechanical structure of the ball in the spherical roller with the mechanical structure of the elliptical spherical roller track or combines the mechanical structure of the ball in the spherical roller with the mechanical structure of the reverse spherical roller track according to the above principle, and creates an overweight high-speed rail bearing provided with the ball in the spherical roller, and the technical scheme adopted by the invention for realizing the purpose is as follows:

the utility model provides a set up super heavy load high-speed railway bearing of ball in spherical roller, includes an inner race, two half outer races, the symmetrical spherical roller of round and two asymmetric spherical rollers of circle, characterized by: the inner circumferences of the two double-half outer races are respectively provided with a spherical roller track, after the two double-half outer races are coaxially combined, the inner circumferences of the two double-half outer races form a common spherical roller track, the curvature radius of the common spherical roller track is larger than the radius of the bearing roller circumferential track, so that the axial section of the common spherical roller track arranged on the inner circumferences of the double-half outer races is in an elliptical structure,

the inner ring is provided with a circle of spherical roller track of the central ball at the angle line which is perpendicular to the axial lead of the bearing at the middle part of the axial distance of the outer circumference, symmetrical spherical rollers are arranged in the spherical roller track of the central ball, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing, and a central ball structure of the spherical roller bearing is formed, a circle of spherical roller track is respectively arranged at the two ends of the middle spherical roller track at intervals, the two circles of spherical roller tracks form an angle of 1-20 degrees with the vertical axis of the bearing, a circle of asymmetric spherical roller is respectively arranged in the two circles of spherical roller tracks, and the inner ring is combined with the shared spherical roller track arranged on the inner circumference of the double-half outer ring through a circle of symmetric spherical roller arranged in the middle of the outer circumference and two circles of asymmetric spherical rollers arranged at two ends to form the spherical roller overload high-speed rail bearing structure with the elliptical spherical roller track.

the inner ferrule is provided with a circle of central spherical roller tracks at the angle line which is perpendicular to the axial lead of the bearing in the middle of the axial distance of the outer circumference, both ends of the central spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, symmetrical spherical rollers are arranged in the central spherical roller tracks, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing to form a central spherical structure of the spherical roller bearing, both ends of the central spherical roller tracks are respectively provided with a circle of spherical roller tracks at intervals, the two circles of spherical roller tracks and the vertical axial lead of the bearing form an angle of 1-20 degrees, each circle of asymmetrical spherical rollers are arranged in the two circles of spherical roller tracks, the inner ferrule is combined with a shared spherical roller track arranged on the inner circumference of the double semi-outer ferrules by a circle of symmetrical spherical rollers arranged in the middle of the outer circumference and two circles of asymmetrical spherical rollers arranged at both ends, the spherical roller overload high-speed rail bearing structure of the elliptical spherical roller track is formed.

the inner ferrule is provided with a circle of spherical roller track of a central ball at the angle line which is perpendicular to the axial lead of the bearing in the middle of the axial distance of the outer circumference, symmetrical spherical rollers are arranged in the spherical roller track of the central ball, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing, a central ball structure of the spherical roller bearing is formed, two ends of the spherical roller track of the central ball are respectively provided with a circle of spherical roller track at intervals, the two circles of spherical roller tracks and the vertical axial lead of the bearing form an angle of 1-20 degrees, the outer ends of the two circles of spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, and the two circles of spherical roller tracks are respectively provided with a circle of asymmetrical spherical rollers, the inner ferrule is combined with a shared spherical roller track arranged on the inner circumference of the double semi-outer ferrules through a circle of symmetrical spherical rollers arranged in the middle of the outer circumference and two circles of, the spherical roller overload high-speed rail bearing structure of the elliptical spherical roller track is formed.

the inner ring is provided with a circle of central spherical roller tracks at the angle line which is perpendicular to the axial line of the bearing in the middle of the axial distance of the outer circumference, both ends of the central spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, symmetrical spherical rollers are arranged in the central spherical roller tracks, the axial lines of the symmetrical spherical rollers are parallel and symmetrical to the axial line of the bearing to form a central spherical structure of the spherical roller bearing, both ends of the central spherical roller tracks are respectively provided with a circle of spherical roller tracks at intervals, the two circles of spherical roller tracks and the vertical axis of the bearing form an angle of 1-20 degrees, the outer ends of the spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, a circle of asymmetrical spherical rollers are respectively arranged in the two circles of spherical roller tracks, the inner ring passes through the circle of symmetrical spherical rollers arranged in the middle of the outer circumference, the two circles of asymmetrical spherical rollers arranged at both ends and the shared outer sleeve arranged at the inner circumference of the double semi-half rings The spherical roller track combination forms the spherical roller super-heavy-load high-speed rail bearing structure of the elliptical spherical roller track.

The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: an outer lasso, two half inner lassos, the asymmetric spherical roller of round symmetry and two rings of asymmetric spherical roller, characterized by: the middle part of the axial distance of the inner circumference of the outer ring is vertical to the angle line of the bearing axial lead, a circle of central spherical roller track is arranged, symmetrical spherical rollers are arranged in the central spherical roller track, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track are respectively provided with a circle of spherical roller track at intervals, the two circles of spherical roller tracks form an angle of 1-20 degrees with the vertical axis of the bearing, two circles of asymmetric spherical rollers are respectively arranged in the two circles of spherical roller tracks,

the outer circumferences of the two double-half inner ferrules are respectively provided with a reverse spherical roller track, the outer circumferences of the two double-half inner ferrules are coaxially combined to form a shared reverse spherical roller track, the curvature radius of the shared reverse spherical roller track is larger than that of the bearing roller track, the two double-half inner ferrules are coaxially arranged on the inner circumference of the outer ferrule, and the shared reverse spherical roller track arranged on the outer circumferences of the double-half inner ferrules is combined with a circle of symmetrical spherical rollers arranged in the middle of the inner circumference of the outer ferrule and two circles of asymmetrical spherical rollers arranged at two ends to form the spherical roller super-heavy-load high-iron bearing structure of the reverse spherical roller track.

The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: an outer lasso, two half inner lassos, the asymmetric spherical roller of round symmetry and two rings of asymmetric spherical roller, characterized by: the middle part of the axial distance of the inner circumference of the outer ring is vertical to the angular line of the axial line of the bearing, a circle of central spherical roller track is arranged, symmetrical spherical rollers are arranged in the central spherical roller track, the axial lines of the symmetrical spherical rollers are parallel and symmetrical to the axial line of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track are respectively provided with a circle of spherical roller track at intervals, the two circles of spherical roller tracks and the vertical axial line of the bearing form an angle of 1-20 degrees, the outer ends of the spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, and two circles of spherical roller tracks are respectively provided with a circle of asymmetrical spherical rollers,

The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: an outer lasso, two half inner lassos, the asymmetric spherical roller of round symmetry and two rings of asymmetric spherical roller, characterized by: the middle part of the axial distance of the inner circumference of the outer ring is provided with a circle of central spherical roller tracks perpendicular to the bearing axial lead, two ends of the central spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, symmetrical spherical rollers are arranged in the central spherical roller tracks, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing to form a central spherical structure of the spherical roller bearing, two ends of the central spherical roller tracks are respectively provided with a circle of spherical roller tracks at intervals, the two circles of spherical roller tracks form an angle of 1-20 degrees with the vertical axis of the bearing, the outer ends of the spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, and a circle of asymmetrical spherical rollers are respectively arranged in the two circles of spherical roller tracks,

The utility model provides a set up super heavy load high-speed railway bearing of spherical roller middle ball, includes two half outer races, an inner race, a round symmetrical spherical roller and two rings of angular contact spherical rolling elements, characterized by: the outer sections of the inner circumferences of the two double-half outer races are respectively provided with an angular contact ball rolling body track, the outer ends of the angular contact ball rolling body tracks are respectively provided with an angular contact ball rolling body outer retaining shoulder, the inner sections of the inner circumferences of the two double-half outer races are respectively provided with a spherical roller track, the middle parts of the inner circumferences of the two double-half outer races combined with the same axle center form a common spherical roller track, the curvature radius of the common spherical roller track is larger than the radius of the bearing roller circumferential track, so that the axial section of the common spherical roller track arranged on the inner circumferences of the bearing outer races is in an elliptical structure,

the inner ferrule is provided with a circle of central spherical roller tracks at the angle line which is perpendicular to the axial lead of the bearing in the middle of the axial distance of the outer circumference, two ends of each central spherical roller track are provided with a central spherical roller outer retaining shoulder respectively, symmetrical spherical rollers are arranged in the central spherical roller tracks, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing to form a central spherical structure of the spherical roller bearing, the outer circumferences at two ends of each central spherical roller track are provided with a circle of angular contact spherical rolling body tracks at intervals, the inner ends of the two circles of angular contact spherical rolling body tracks are provided with angular contact spherical rolling body inner retaining shoulders respectively, spherical rolling bodies are arranged in the two circles of angular contact spherical rolling body tracks, and the inner ferrule is provided with a common spherical roller track and two spherical roller tracks which are arranged in the middle of the outer circumference of the inner ferrule through a circle of symmetrical spherical roller arranged in the middle of the outer circumference and two circles of the two circles of angular The end is provided with an angular contact spherical rolling body track combination to form an ultra-heavy load high-speed rail bearing structure with balls arranged in an elliptical spherical roller track.

The utility model provides a set up super heavy load high-speed railway bearing of spherical roller centrally positioned ball, includes two half inner race, an outer lasso, a round symmetrical spherical roller and two rings of angular contact spherical rolling elements, characterized by: the outer sections of the outer circumferences of the two double-half inner ferrules are respectively provided with an angular contact ball rolling body track, the outer ends of the angular contact ball rolling body tracks are respectively provided with an angular contact ball rolling body outer retaining shoulder, the inner sections of the outer circumferences of the double-half inner ferrules are respectively provided with a reverse spherical roller track, the middle parts of the outer circumferences of the two double-half inner ferrules which are coaxially combined form a common reverse spherical roller track, the curvature radius of the common reverse spherical roller track is larger than the radius of the bearing roller circumferential track,

the inner ends of the two circles of angular contact spherical rolling body tracks are respectively provided with an angular contact spherical rolling body inner blocking shoulder, the two circles of angular contact spherical rolling body tracks are respectively provided with a spherical rolling body, the outer ring passes through a circle of symmetrical spherical roller arranged in the middle of the inner circumference axial distance and two circles of angular contact spherical rolling bodies arranged at the two ends and the shared spherical roller track arranged in the middle of the double-half inner ring track The track is combined with angular contact spherical rolling body tracks arranged at two ends to form an overweight high-speed rail bearing structure with balls arranged in the reverse spherical roller track.

The invention discloses an ultra-heavy-load high-speed rail bearing with a spherical roller and a built-in ball, which has the beneficial effects that: the mechanical structure of the elliptic spherical roller track and the mechanical structure of the reverse spherical roller track are adopted, the defects and the limitations of the traditional spherical roller bearing are broken through, the limitation that the curvature radius of the spherical roller track of the bearing is smaller than the radius of the bearing is changed, the curvature radius of the spherical roller track can be selected in a wider range, the application potential of the spherical roller bearing is fully developed, the adjustment of the size of the spherical roller contact angle of the bearing according to the design requirement is realized, the ratio of the bearing combined load bearing capacity is adjusted, and the friction resistance and the rotating speed of the bearing are adjusted; for example: the high-speed overload high-speed iron bearing of the invention arranges the symmetrical spherical rollers on a circle of track surface between two sections of spherical rollers at the angle line vertical to the bearing axial lead, leads the axial lead of the spherical roller to be symmetrical to the axial lead of the bearing, forms a mid-ball structure of the spherical roller bearing, leads the mid-ball of the spherical roller to occupy the optimal section of track range in the bearing track, achieves the effects of minimum friction resistance, minimum friction heating and maximum bearing capacity,

SKF bearing data display: the axial bearing capacity of the spherical roller bearing is about 30% greater than that of the tapered roller bearing, and the spherical roller has larger radial bearing capacity and axial bearing capacity than the tapered roller when the roller contact angle is the same, so that: the invention adopts two segments of asymmetric spherical rollers and a vertical axis of the bearing to form a certain angle for bearing axial load and combined load, can realize the same axial load force, smaller frictional resistance and larger radial bearing force by using a smaller contact angle than a tapered roller, fully utilizes the dynamic characteristics of the contour matching of an elliptical spherical roller track and a reverse spherical roller track and a spherical roller and all mechanical advantages of the spherical roller bearing, ensures that the bearing can keep uniform contact pressure under any moment state (SKF bearing comprehensive type P776 page), ensures that the contact angle of the spherical roller can be selected in a larger range, ensures that the bearing can design the optimal combined load ratio, and fully exerts the mechanical advantages of large bearing force, small friction coefficient and low heat generation of the spherical roller bearing, thereby: the super-heavy-load high-speed rail bearing with the ball arranged in the spherical roller enables the bearing to have the characteristics of high speed, heavy load, low friction, low temperature rise and long service life. Can adapt to higher high-speed rail speed and axle weight, and has obvious scientific and technical progress significance for high-speed rail bearings.

Drawings

FIG. 1 is a sectional view of a high-speed rail bearing with spherical rollers arranged in the middle of the outer circumference of an inner race and elliptical roller tracks arranged on the inner circumferences of double-half outer races.

FIG. 2 is a sectional view of a high-speed rail bearing with outer retaining shoulders at two ends of a mid-ball of a spherical roller in the middle of the outer circumference of an inner race and elliptical roller tracks on the inner circumferences of two half outer races.

FIG. 3 is a cross-sectional view of a high-speed rail bearing with a spherical roller middle ball arranged in the middle of the outer circumference of an inner race, spherical rollers arranged at both ends provided with outer retaining shoulders, and an elliptical roller track arranged in the inner circumferences of double-half outer races.

FIG. 4 is a sectional view of a high-speed rail bearing with outer retaining shoulders at two ends of a mid-ball spherical roller in the middle of the outer circumference of an inner race, outer retaining shoulders at two ends of a mid-ball spherical roller, and elliptical roller tracks on the inner circumferences of double-half outer races.

FIG. 5 is a sectional view of a high-speed rail bearing with spherical roller embedded balls arranged in the middle of the inner circumference of an outer race and reverse spherical roller tracks arranged on the outer circumferences of double-half inner races.

FIG. 6 is a sectional view of a high-speed rail bearing with a spherical roller center ball arranged in the middle of the inner circumference of the outer race, spherical rollers arranged at both ends provided with outer retaining shoulders, and two halves of the outer circumference of the inner race provided with a track of reverse spherical rollers.

FIG. 7 is a sectional view of a high-speed rail bearing with outer retaining shoulders at two ends of a mid-ball spherical roller in the middle of the inner circumference of an outer race, outer retaining shoulders at two ends of spherical rollers respectively, and a track of reverse spherical rollers at the outer circumferences of two halves of the inner race.

FIG. 8 is a sectional view of a high-speed rail bearing with a spherical roller center ball arranged in the middle of the outer circumference of the inner race and angular contact ball bearing structures arranged at both ends of the inner race according to the present invention.

FIG. 9 is a sectional view of a high-speed rail bearing with spherical rollers and ball bearings at both ends, the spherical rollers being disposed in the middle of the inner circumference of the outer race, according to the present invention.

Fig. 10 is a schematic diagram of the mechanical structure and functional analysis of the spherical track of the elliptical spherical roller bearing of the present invention, wherein in fig. 10: (1) is an axial section structure of an elliptical spherical roller track, (2) is a spherical roller, (R) is the curvature radius of the elliptical spherical roller track, (A) is a spherical roller contact angle,

FIG. 10 schematically shows: when the length of the spherical roller (2) is not changed, the larger the curvature radius (R) of the elliptical spherical roller track (1), the smaller the contact angle (A) of the spherical roller (2).

Fig. 11 is a schematic diagram of a mechanical structure analysis of a spherical track of a conventional spherical roller bearing, in which fig. 11: (1) the axial section structure of the spherical roller track, (2) the spherical roller, (R) the curvature radius of the spherical roller track, (A) the roller contact angle, and the schematic diagram of FIG. 11: when the length of the spherical roller (2) is not changed, the smaller the curvature radius (R) of the spherical roller track (1), the larger the contact angle (A) of the spherical roller (2).

Fig. 12 is a schematic diagram of the mechanics and functional analysis of the spherical track of the reverse spherical roller bearing of the present invention, in which fig. 12: (1) is a reverse spherical roller track axial section structure, (2) is a spherical roller, (R) is a reverse spherical roller track curvature radius, (A) is a roller contact angle, and the diagram of fig. 12 shows that: when the length of the spherical roller (2) is not changed, the larger the curvature radius (R) of the reverse spherical roller track (1), the smaller the contact angle (A) of the spherical roller (2).

In the figure: 1. the device comprises an inner ferrule, 2, double-half outer ferrules, 3, outer ferrules, 4, double-half inner ferrules, 5, a middle spherical roller track, 5-1, a spherical roller track 6, a spherical roller track, 6 small shared spherical roller tracks, 7, symmetrical spherical rollers, 7-1, asymmetrical spherical rollers, 8, spherical roller outer retaining shoulders, 9, a middle spherical roller outer retaining shoulder 10, reverse spherical roller tracks, 10-1, shared reverse spherical roller tracks, 11, angular contact ball rolling element tracks, 12, angular contact ball rolling element inner retaining shoulders, 12-1 angular contact ball rolling element outer retaining shoulders, 13 and spherical rolling elements.

Detailed Description

The present invention will be described in further detail with reference to collective examples, but the present invention is not limited to the specific examples.

Example 1:

as shown in figure 1, the super-heavy-duty high-speed rail bearing provided with the spherical rollers and the built-in balls comprises an inner ring 1, two double-half outer rings 2, a circle of symmetrical spherical rollers 7 and two circles of asymmetrical spherical rollers 7-1, wherein spherical roller tracks 6 are respectively arranged on the inner circumferences of the two double-half outer rings 2, after the two double-half outer rings 2 are coaxially combined, the inner circumferences of the two double-half outer rings form a common spherical roller track 6-1, the curvature radius of the common spherical roller track 6-1 is larger than that of the bearing roller track, so that the axial section of the common spherical roller track 6-1 is in an elliptical structure,

the inner ferrule 1 is provided with a circle of spherical roller track 5 of a central ball at the angle line which is perpendicular to the axial lead of the bearing at the middle part of the axial distance of the outer circumference, symmetrical spherical rollers 7 are arranged in the spherical roller track 5 of the central ball, the axial lead of the symmetrical spherical rollers 7 is parallel and symmetrical to the axial lead of the bearing, a central ball structure of the spherical roller bearing is formed, two ends of the spherical roller track 5 of the central ball are respectively provided with a circle of spherical roller track 5-1 at intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axis of the bearing, a row of asymmetrical spherical rollers 7-1 are respectively arranged in the two circles of spherical roller tracks 5-1, the inner ferrule 1 is combined with a shared spherical roller track 6-1 arranged at the middle part of the inner circumference of the double-half outer ferrule 2 through the symmetrical spherical rollers 7 arranged at the middle part of the outer circumference and the two circles of asymmetrical spherical rollers, the spherical roller overload high-speed rail bearing structure of the elliptical spherical roller track is formed.

Example 2:

as shown in figure 2, the super-heavy-duty high-speed rail bearing provided with the spherical rollers and the built-in balls comprises an inner ring 1, two double-half outer rings 2, a circle of symmetrical spherical rollers 7 and two circles of asymmetrical spherical rollers 7-1, wherein spherical roller tracks 6 are respectively arranged on the inner circumferences of the two double-half outer rings 2, after the two double-half outer rings 2 are coaxially combined, the inner circumferences of the two double-half outer rings form a common spherical roller track 6-1, the curvature radius of the common spherical roller track 6-1 is larger than that of the bearing roller track, so that the axial section of the common spherical roller track 6-1 is in an elliptical structure,

the inner ring 1 is provided with a circle of central spherical roller tracks 5 at the angle line which is perpendicular to the axial line of the bearing in the middle of the axial distance of the outer circumference, two ends of each central spherical roller track 5 are respectively provided with a spherical roller outer retaining shoulder 9, symmetrical spherical rollers 7 are arranged in the central spherical roller tracks 5, the axial lines of the symmetrical spherical rollers 7 are parallel and symmetrical to the axial line of the bearing to form a central spherical structure of the spherical roller bearing, two ends of each central spherical roller track 5 are respectively provided with a circle of spherical roller tracks 5-1 at intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axis of the bearing, two circles of spherical roller tracks 5-1 are respectively provided with a circle of asymmetrical spherical rollers 7-1, the inner ring 1 passes through the symmetrical spherical rollers 7 arranged in the middle of the outer circumference, two circles of asymmetrical spherical rollers 7-1 arranged at two ends and the common outer circumference of the double-half-circle 2 The spherical roller track 6-1 is combined to form the spherical roller super-heavy-load high-speed rail bearing structure of the elliptical spherical roller track.

Example 3:

as shown in figure 3, the super-heavy-duty high-speed rail bearing provided with the spherical rollers and the built-in balls comprises an inner ring 1, two double-half outer rings 2, a circle of symmetrical spherical rollers 7 and two circles of asymmetrical spherical rollers 7-1, wherein spherical roller tracks 6 are respectively arranged on the inner circumferences of the two double-half outer rings 2, after the two double-half outer rings 2 are coaxially combined, the inner circumference of each double-half outer ring forms a common spherical roller track 6-1, the curvature radius of the common spherical roller track 6-1 is larger than that of the bearing roller track, so that the axial section of the common spherical roller track 6-1 is in an elliptical structure,

the inner ring 1 is provided with a circle of spherical roller track 5 with a central spherical roller in the middle of the axial distance of the outer circumference perpendicular to the axial line of the bearing, symmetrical spherical rollers 7 are arranged in the spherical roller track 5 with the axial line of the symmetrical spherical rollers 7 parallel and symmetrical to the axial line of the bearing to form a central spherical structure of the spherical roller bearing, two circles of spherical roller tracks 5-1 are respectively arranged at the two ends of the spherical roller track 5 with intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axis of the bearing, the outer ends of the two rows of spherical roller tracks 5-1 are respectively provided with a spherical roller outer retaining shoulder 8, a circle of asymmetrical spherical rollers 7-1 are respectively arranged in the two circles of spherical roller tracks 5-1, the inner ring 1 is provided with a circle of asymmetrical spherical rollers 7-1 through the middle of the outer circumference, two circles of asymmetrical spherical rollers 7-1 are arranged at the two ends of the inner ring 1 and the inner circumference of the two semi- The common spherical roller tracks 6-1 are combined to form the spherical roller super-heavy-load high-speed rail bearing structure with the elliptical spherical roller tracks.

Example 4:

as shown in figure 4, the super-heavy-duty high-speed rail bearing provided with the spherical rollers and the built-in balls comprises an inner ring 1, two double-half outer rings 2, a circle of symmetrical spherical rollers 7 and two circles of asymmetrical spherical rollers 7-1, wherein spherical roller tracks 6 are respectively arranged on the inner circumferences of the two double-half outer rings 2, after the two double-half outer rings 2 are coaxially combined, the inner circumferences of the two double-half outer rings form a common spherical roller track 6-1, the curvature radius of the common spherical roller track 6-1 is larger than that of the bearing roller track, so that the axial section of the common spherical roller track 6-1 is in an elliptical structure,

the inner ring 1 is provided with a circle of spherical roller rails 5 arranged at the angle line which is perpendicular to the axial line of the bearing in the middle of the axial distance of the outer circumference, both ends of the spherical roller rails 5 are respectively provided with a spherical roller outer retaining shoulder 9, symmetrical spherical rollers 7 are arranged in the spherical roller rails 5, the axial lines of the symmetrical spherical rollers 7 are parallel and symmetrical to the axial line of the bearing, the central spherical structure of the spherical roller bearing is formed, both ends of the spherical roller rails 5 are respectively provided with a circle of spherical roller rails 5-1 at intervals, the two circles of spherical roller rails 5-1 form an angle of 10 degrees with the vertical axis of the bearing, the outer ends of the spherical roller rails 5-1 are respectively provided with a spherical roller outer retaining shoulder 8, and a circle of asymmetrical spherical rollers 7-1 are respectively arranged in the spherical roller rails 5-1, the inner ring 1 is combined with the shared spherical roller track 6-1 arranged on the inner circumference of the double-half outer ring 2 through a symmetrical spherical roller 7 arranged in the middle of the outer circumference, two circles of asymmetrical spherical rollers 7-1 arranged at two ends and the shared spherical roller track 6-1 arranged on the inner circumference of the double-half outer ring 2 to form a spherical roller overload high-speed rail bearing structure with an elliptic spherical roller track.

Example 5:

the super heavy load high-speed rail bearing provided with the ball-in-ball of the spherical roller shown in fig. 5 comprises: an outer ring 3, two double-half inner ring 4, a circle of symmetrical spherical roller 7 and two circles of asymmetrical spherical roller 7-1, wherein the middle part of the axial distance of the inner circumference of the outer ring 3 is provided with a circle of central spherical roller track 5 perpendicular to the axial line of the bearing, the symmetrical spherical roller 7 is arranged in the central spherical roller track 5, the axial line of the symmetrical spherical roller 7 is parallel and symmetrical to the axial line of the bearing to form a central spherical structure of the spherical roller bearing, two circles of spherical roller tracks 5-1 are respectively arranged at the two ends of the central spherical roller track 5 at intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axial line of the bearing, and one circle of asymmetrical spherical roller 7-1 is respectively arranged in the two circles of spherical roller tracks 5-1,

the outer circumferences of the two double-half inner ring 4 are respectively provided with a reverse spherical roller track 10, after the two double-half inner ring 4 are coaxially combined, the outer circumferences of the two double-half inner ring 4 form a common reverse spherical roller track 10-1, the curvature radius of the common reverse spherical roller track 10-1 is larger than the radius of a bearing roller circumferential track, the two double-half inner ring 4 are coaxially arranged on the inner circumference of the outer ring 3, and the spherical roller super-heavy-load high-speed iron bearing structure of the reverse spherical roller track is formed by combining the common reverse spherical roller track 10-1 arranged on the outer circumferences of the double-half inner ring 4, a circle of symmetrical spherical roller 7 arranged in the middle of the inner circumference of the outer ring 3 and two circles of asymmetrical spherical rollers 7-1 arranged at two ends.

Example 6:

the overload high-speed rail bearing provided with the ball-in-spherical roller shown in fig. 6 comprises: an outer ring 3, two double-half inner ring 4, a circle of symmetrical spherical roller 7 and two circles of asymmetrical spherical roller 7-1, wherein the middle part of the axial distance of the inner circumference of the outer ring 3 is provided with a circle of central spherical roller track 5 at the angle line vertical to the axial line of the bearing, the symmetrical spherical roller 7 is arranged in the central spherical roller track 5, the axial line of the symmetrical spherical roller 7 is parallel and symmetrical to the axial line of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track 5 are respectively provided with a circle of spherical roller track 5-1 at intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axial line of the bearing, the outer ends of the spherical roller tracks 5-1 are respectively provided with a spherical roller outer retaining shoulder 8, and two circles of asymmetrical spherical roller 7-1 are respectively arranged in the two circles of spherical roller tracks 5-1,

the outer circumferences of the two double-half inner ring 4 are respectively provided with a reverse spherical roller track 10, after the two double-half inner ring 4 are coaxially combined, the outer circumferences of the two double-half inner ring 4 form a common reverse spherical roller track 10-1, the curvature radius of the common reverse spherical roller track 10-1 is larger than the radius of a bearing roller circumferential track, the two double-half inner ring 4 are coaxially arranged on the inner circumference of the outer ring 3, and the common reverse spherical roller track 10-1 arranged on the outer circumference of the double-half inner ring 4 is combined with a symmetrical spherical roller 7 arranged in the middle of the inner circumference of the outer ring 3 and two circles of asymmetrical spherical rollers 7-1 arranged at two ends to form a spherical roller super-load high-speed iron bearing structure of the reverse spherical roller track.

Example 7:

the overload high-speed rail bearing provided with the ball-in-spherical roller shown in fig. 7 comprises: an outer ring 3, two double-half inner ring 4, a circle of symmetrical spherical roller 7 and two circles of asymmetrical spherical roller 7-1, wherein the middle part of the axial distance of the inner circumference of the outer ring 3 is provided with a circle of central spherical roller track 5 at the angle line vertical to the bearing axial lead, two ends of the central spherical roller track 5 are respectively provided with a spherical roller outer retaining shoulder 9, the symmetrical spherical roller 7 is arranged in the central spherical roller track 5, the axial lead of the symmetrical spherical roller 7 is parallel and symmetrical to the axial lead of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track 5 are respectively provided with a circle of spherical roller track 5-1 at intervals, the two circles of spherical roller tracks 5-1 form an angle of 10 degrees with the vertical axis of the bearing, the outer end of the spherical roller track 5-1 is respectively provided with a spherical roller outer retaining shoulder 8, and a circle of asymmetric spherical roller 7-1 is respectively arranged in the two circles of spherical roller tracks 5-1,

Example 8:

the utility model provides a set up super heavy load high-speed railway bearing of ball in spherical roller, includes an inner race 1, two half outer races 2, a circle symmetrical spherical roller 7 and two rings of angular contact spherical rolling body 13, characterized by: the outer sections of the inner circumferences of the two double-half outer races 2 are respectively provided with an angular contact spherical rolling body track 11, the outer ends of the angular contact spherical rolling body tracks 11 are respectively provided with an angular contact spherical rolling body outer retaining shoulder 12-1, the inner sections of the inner circumferences of the double-half outer races 2 are respectively provided with a spherical roller track 6, the middle parts of the inner circumferences of the two double-half outer races after being coaxially combined form a common spherical roller track 6-1, the curvature radius of the common spherical roller track 6-1 is larger than the radius of the bearing roller circumferential track, so that the axial section of the common spherical roller track 6-1 arranged on the inner circumferences of the double-half outer races 2 is in an elliptical structure,

the inner ferrule 1 is provided with a circle of central spherical roller track 5 at the angle line perpendicular to the bearing axis line in the middle of the outer circumference axial distance, symmetrical spherical rollers 7 are arranged in the central spherical roller track 5, the axis line of the symmetrical spherical rollers 7 is parallel and symmetrical to the axis line of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track 5 are respectively provided with a central spherical roller outer retaining shoulder 9, the outer circumferences of two ends of the central spherical roller track 5 are respectively provided with a circle of angular contact spherical rolling body track 11 at intervals, the inner ends of the two circles of angular contact spherical rolling body tracks 11 are respectively provided with a central spherical rolling body inner retaining shoulder 12, two circles of angular contact spherical rolling bodies 13 are respectively arranged in the two circles of angular contact spherical rolling body tracks 11, the inner ferrule 1 passes through the circle of symmetrical spherical rollers 7 arranged in the middle of the outer circumference, the two circles of angular contact spherical rolling bodies 13 arranged at two ends and the double semi-outer sleeves The shared spherical roller track 6-1 arranged in the middle of the inner circumference of the ring 2 and the angular contact spherical rolling body tracks 11 arranged at two ends are combined to form the spherical roller super-heavy-load high-speed rail bearing structure with the elliptical spherical roller tracks.

Claims

1. The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: an inner race, two half outer races, a circle of symmetrical spherical roller and two rings of asymmetrical spherical roller: the method is characterized in that: the inner circumferences of the two double-half outer races are respectively provided with a spherical roller track, after the two double-half outer races are coaxially combined, the inner circumferences of the two double-half outer races form a common spherical roller track, the curvature radius of the common spherical roller track is larger than the radius of the bearing roller circumferential track, so that the axial section of the common spherical roller track arranged on the inner circumferences of the bearing outer races is in an elliptical structure,

the middle part of the outer circumference axial distance of the inner ferrule is provided with a circle of spherical roller track with a built-in ball at an angle line vertical to the axial line of the bearing, symmetrical spherical rollers are arranged in the spherical roller track of the central spherical roller, so that the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing to form a central spherical structure of the spherical roller bearing, a circle of spherical roller track is respectively arranged at the two ends of the middle spherical roller track at intervals, the two circles of spherical roller tracks form an angle of 1-20 degrees with the vertical axis of the bearing, a circle of asymmetric spherical roller is respectively arranged in the two circles of spherical roller tracks, and the inner ring is combined with the shared spherical roller track arranged on the inner circumference of the double-half outer ring through a circle of symmetric spherical roller arranged in the middle of the outer circumference and two circles of asymmetric spherical rollers arranged at two ends to form the spherical roller overload high-speed rail bearing structure with the elliptical spherical roller track.

2. The bearing of claim 1, wherein the bearing comprises: and spherical roller outer retaining shoulders are respectively arranged at two ends of a circle of spherical roller track with a central ball, which is arranged at the position of the middle part of the axial distance of the outer circumference of the inner ferrule, perpendicular to the angle line of the axial line of the bearing.

3. The super heavy-duty high-speed rail bearing provided with the ball-in-ball of the spherical roller according to claim 1, is characterized in that: and spherical roller outer retaining shoulders are respectively arranged at the outer ends of the spherical roller tracks which are respectively arranged at the two ends of the outer circumference of the inner ferrule at intervals.

4. The bearing of claim 1, wherein the bearing comprises: the two ends of a circle of spherical roller track with a center ball arranged at the position of an angle line which is perpendicular to the axial line of the bearing and is arranged at the middle part of the axial distance of the outer circumference of the inner ferrule are respectively provided with a spherical roller outer retaining shoulder, and the outer ends of the spherical roller track which is respectively arranged at the two ends of the spherical roller track at intervals are respectively provided with a spherical roller outer retaining shoulder.

5. The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: one outer race, two half inner races, a circle of symmetrical spherical roller and two circles of asymmetrical spherical roller: the method is characterized in that: the middle part of the axial distance of the inner circumference of the outer ring is vertical to the angle line of the bearing axial lead, a circle of central spherical roller track is arranged, symmetrical spherical rollers are arranged in the central spherical roller track, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing, a central spherical structure of the spherical roller bearing is formed, a circle of spherical roller track is respectively arranged at the two ends of the central spherical roller track at intervals, the two circles of spherical roller tracks form an angle of 1-20 degrees with the vertical axis of the bearing, a circle of asymmetric spherical roller is respectively arranged in the two circles of spherical roller tracks,

the outer circumferences of the two double-half inner ferrules are respectively provided with a reverse spherical roller track, after the two double-half inner ferrules are coaxially combined, the outer circumferences of the two double-half inner ferrules form a shared reverse spherical roller track, the curvature radius of the shared reverse spherical roller track is larger than the radius of the bearing roller circumferential track, the two double-half inner ferrules are coaxially arranged on the inner circumference of the outer ferrule, and the shared reverse spherical roller track arranged on the outer circumferences of the double-half inner ferrules is combined with a circle of symmetrical spherical rollers arranged in the middle of the inner circumference of the outer ferrule and two circles of asymmetrical spherical rollers arranged at two ends to form the spherical roller super-heavy-load high-iron bearing structure of the reverse spherical roller track.

6. The bearing of claim 5, wherein the bearing comprises: and spherical roller outer retaining shoulders are respectively arranged at the outer ends of the spherical roller tracks which are respectively arranged at the two ends of the inner circumference of the outer ring at intervals.

7. The bearing of claim 5, wherein the bearing comprises: the two ends of a circle of spherical roller track with a central ball, which is arranged at the position of an angle line, perpendicular to the axial line of the bearing, of the middle part of the axial distance of the inner circumference of the outer ring, are respectively provided with a spherical roller outer retaining shoulder, and the outer ends of the spherical roller track with the two ends of the spherical roller track with the central ball are respectively provided with a spherical roller outer retaining shoulder at intervals.

8. The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: two double-half outer races, one inner race, one circle of symmetrical spherical roller and two circles of angular contact spherical rolling bodies: the method is characterized in that: the outer sections of the inner circumferences of the two double-half outer races are respectively provided with an angular contact spherical rolling body track, the outer ends of the angular contact spherical rolling body tracks are respectively provided with an angular contact spherical rolling body outer retaining shoulder, the inner sections of the inner circumferences of the two double-half outer races are respectively provided with a spherical roller track, the middle parts of the inner circumferences of the two double-half outer races combined with the same axle center form a common spherical roller track, the curvature radius of the common spherical roller track is larger than the radius of the bearing roller circumferential track, so that the axial sections of the common spherical roller tracks arranged on the inner circumferences of the double-half outer races are in an elliptical structure,

the inner ferrule is provided with a circle of central spherical roller track at the position of an angle line which is perpendicular to the axial lead of the bearing and is arranged in the middle of the axial distance of the outer circumference, symmetrical spherical rollers are arranged in the central spherical roller track, the axial leads of the symmetrical spherical rollers are parallel and symmetrical to the axial lead of the bearing, a central spherical structure of the spherical roller bearing is formed, two ends of the central spherical roller track are respectively provided with a central spherical roller outer retaining shoulder, two ends of the central spherical roller track are respectively provided with a circle of angular contact spherical rolling body track at intervals, the inner ends of the two circles of angular contact spherical rolling body tracks are respectively provided with an angular contact spherical rolling body inner retaining shoulder, the two circles of angular contact spherical rolling body tracks are respectively provided with a spherical rolling body, the inner ferrule passes through a circle of symmetrical spherical roller arranged in the middle of the outer circumference, two circles of angular contact spherical rolling bodies arranged at two ends, a common spherical roller track arranged in the middle of the two halves of the spherical roller The angular contact spherical rolling body tracks arranged on the peripheral outer section are combined to form the ultra-heavy load high-speed rail bearing structure of the elliptical spherical roller track.

9. The utility model provides a set up super heavy load high-speed railway bearing of ball roller center-placed ball, includes: two half inner ring wares, an outer lasso, a circle symmetrical spherical roller and two rings of angular contact spherical rolling body: the method is characterized in that: the outer sections of the outer circumferences of the two double-half inner ferrules are respectively provided with an angular contact ball rolling body track, the outer ends of the angular contact ball rolling body tracks are respectively provided with an angular contact ball rolling body outer retaining shoulder, the inner sections of the outer circumferences of the double-half inner ferrules are respectively provided with a reverse spherical roller track, after the two double-half inner ferrules are coaxially combined, the middle parts of the outer circumferences of the two double-half inner ferrules form a shared reverse spherical roller track, the curvature radius of the shared reverse spherical roller track is larger than the radius of the bearing roller circumferential track,

the inner ends of the two circles of angular contact spherical rolling body tracks are respectively provided with an angular contact spherical rolling body inner blocking shoulder, the two circles of angular contact spherical rolling body tracks are respectively provided with a spherical rolling body, the outer ring passes through a circle of symmetrical spherical roller arranged in the middle of the inner circumference axial distance and two circles of angular contact spherical rolling bodies arranged at two ends and a shared spherical roller track and a double-half inner ring outer circle track arranged in the middle of the double-half inner ring outer circumference The angular contact spherical rolling body tracks arranged on the peripheral outer section are combined to form the overload high-speed rail bearing structure of the reverse spherical roller track.