CN110966308A

CN110966308A - Novel high-speed rail wheel axle power bearing

Info

Publication number: CN110966308A
Application number: CN201811137134.2A
Authority: CN
Inventors: 孟萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-04-07

Abstract

The invention relates to a bearing, in particular to a high-speed rail power bearing with a middle ball-in-diameter reducing middle ring, two double-half outer rings, a deep groove ball bearing outer ring, two double-half inner rings and inner and outer layers of rolling bodies.

Description

Novel high-speed rail wheel axle power bearing

Technical Field

The invention relates to a high-speed rail bearing and an auxiliary bearing of various suspension trains.

Background

At present: the high-speed rail bearing manufactured in developed countries in the world is still a traditional single-layer tapered roller bearing which is manufactured by means of advanced bearing materials and process technology and has whole-course friction, and research data show that: the mechanical structure of the conventional tapered roller bearing has a number of fatal defects, such as:

1. in the conventional single-layer tapered roller bearing, the driving force of about 1/2 acting on the bearing is converted into frictional heat energy in the rotating work process between the roller and the inner and outer ring raceways, between the roller and the retainer and between the roller and the lubricating grease, so that: the traditional bearing has the disadvantages of large frictional resistance and abrasion, easy heating and poor high-speed performance, can directly cause a plurality of potential safety hazards in the high-speed rotation of the bearing,

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

3. the roller is easily skewed: the biggest inherent fatal defect of the tapered roller bearing is that the roller is easy to incline due to uneven stress of a roller contact line in rotation, and the mechanical concept of the roller inclination is as follows: when the roller is inclined, the rolling surface of the roller is not in line contact with the roller path any more, but is clamped between the inner and outer ring roller paths at a certain angle like a wedge, and slides and rubs during biting with the inner and outer rings to cause indentation or peeling of one end of the rolling element, and serious abrasion of the other end directly causes indentation, peeling, retainer cracking or flange cracking of the roller path of the ring, which often occurs in the wheel axle bearing of a heavy-duty automobile, currently, developed countries adopt a method for increasing the roller convexity to reduce the stress concentration of the roller end, but still can not change the mechanical essence of stress concentration, and can not fundamentally correct the defects of the innate mechanical structure,

according to the technical insufficiency that traditional high-speed railway bearing exists, the mechanical structure that has adopted the four point contacts of middle ball in the utility model ZL201621332291, 5 "a novel high-speed railway power bearing" before oneself has replaced tapered roller to utilize the angle of inclination to bear the design scheme of two-way axial load, and the effectual friction that has reduced tapered roller wipes resistance and roller crooked, nevertheless: the four-point contact ball bearing still has slight sliding friction when bearing pure radial load, can not bear higher running speed, with people's higher demand to the trip, china's high-speed railway is marching to the high-speed railway of speed per hour more than 400 kilometers and the maglev train of speed per hour 600 kilometers to 1000 kilometers at present, consequently: the invention carries out deep technical innovation on the high-speed rail bearing,

disclosure of Invention

In view of the demand of continuously increasing the speed of a high-speed rail and the defects of the prior art, further intensive research is carried out on the basis of the prior utility model dynamics theory technology, and a novel high-speed rail wheel shaft power bearing is provided, wherein the middle ball arranged in the middle ring and the middle part of the outer circumference of the reducing middle ring adopts mechanical structures such as a double-row deep groove ball bearing (the friction coefficient is 0, 0010-0012), a double-row angular contact ball bearing, a deep groove ball bearing and the like, so that the ball rolling body can always keep the advantage of pure rolling friction of two-point contact in combined load, the rotation precision and the stability of the bearing are greatly improved, the rotation speed of the middle ball is greatly improved, the sliding friction and the abrasion of the middle ball are greatly reduced, the frictional heating of the bearing is greatly reduced, the radial bearing capacity and the combined load bearing capacity of the middle ball are greatly improved, and cylindrical rollers (the friction coefficient is 0, the radial bearing capacity is higher than that, 0008-0010) and toroidal rollers (coefficient of friction 0, 0010-0012), in particular the use of toroidal rollers, gives the bearing a good micro-centering function and a strong radial bearing capacity, and a compact cross section of the needle bearing, because: the special annular arc surface of the circular roller can ensure that the load born by the roller is uniformly distributed on the contact surface of the roller and the raceway, so that: the novel high-speed heavy-load high-speed rail dynamic bearing does not have the defects of roller stress concentration, roller deflection and the like, and has the characteristics of low friction, low temperature rise and long service life (taken from SKF comprehensive type record P776 page).

The technical scheme adopted by the invention for realizing the purpose is as follows: the utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a variable-diameter middle ring, two double-half inner rings, two double-half outer rings, a deep groove ball bearing outer ring, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the inner circumference, the middle part of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring to form the reducing middle ring, the double-row angular contact spherical rolling element tracks arranged at the inner circumference of the reducing middle ring are respectively provided with spherical rolling elements, the two ends of the two circles of double-row angular contact spherical rolling element tracks are respectively provided with a row of cylindrical roller tracks at intervals corresponding to each other, the cylindrical roller tracks are respectively provided with cylindrical rollers, the deep groove spherical rolling element tracks arranged at the outer circumference of the reducing middle ring are internally provided with spherical rolling elements, and the two ends of the deep, the circular roller track is internally provided with a circular roller,

the two double-half inner ferrules are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks on the inner circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder, the inner ends of the cylindrical roller tracks are respectively provided with a cylindrical roller inner retaining shoulder, the outer circumference of the cylindrical roller inner retaining shoulder is respectively provided with an angular contact spherical rolling element track, the angular contact spherical rolling element tracks arranged on the outer circumferences of the cylindrical roller inner retaining shoulders of the two double-half inner ferrules are respectively corresponding to the double-row angular contact spherical rolling element tracks arranged on the inner circumference of the reducing middle ring, and a middle ball structure of the double-row angular contact,

the outer ring of the deep groove ball bearing is coaxially arranged between two double-half outer rings on the outer circumference of the reducing middle ring and corresponds to a circle of deep groove spherical rolling body track arranged in the middle of the outer circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies,

the two double-half outer rings are respectively arranged on two sides of the outer ring of the deep groove ball bearing, and a circle of circular roller track is respectively arranged on the inner circumferences of the two double-half outer rings.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a variable-diameter middle ring, two double-half inner rings, two double-half outer rings, a deep groove ball bearing outer ring, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the inner circumference, the middle part of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring to form the reducing middle ring, the double-row angular contact spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring are respectively provided with spherical rolling elements, the two ends of the double-row angular contact spherical rolling element tracks are respectively provided with a row of cylindrical roller tracks at intervals corresponding to each other, the cylindrical rollers are respectively arranged in the cylindrical roller tracks, the deep groove spherical rolling element tracks arranged at the outer circumference of the reducing middle ring are provided with spherical rolling elements, the two ends of, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half inner ferrules are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks on the inner circumference of the reducing middle ring respectively, the outer circumferences of the two double-half inner ferrules are provided with a circle of cylindrical roller track respectively, the outer ends of the cylindrical roller tracks are provided with cylindrical roller outer retaining shoulders respectively, the inner ends of the cylindrical roller tracks are provided with cylindrical roller inner retaining shoulders respectively, the middle parts of the outer circumferences of the cylindrical roller inner retaining shoulders are provided with angular contact spherical rolling element tracks respectively, the angular contact spherical rolling element tracks arranged on the two double-half inner ferrule cylindrical roller inner retaining shoulders correspond to the double-row angular contact spherical rolling element tracks arranged on the inner circumference of the reducing middle ring respectively, and a middle ball structure of the double-row angular contact ball bearing is formed by combining,

the outer ring of the deep groove ball bearing is coaxially arranged between two double-half outer rings at the outer circumference of the reducing middle ring and corresponds to a circle of deep groove spherical rolling body track arranged at the middle part of the outer circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies,

the two double-half outer rings are arranged on two sides of the outer ring of the deep groove ball bearing, the inner circumferences of the two double-half outer rings are respectively provided with a circle of cylindrical roller track, and the outer ends of the two double-half outer ring cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the variable diameter middle ring, the two double-half inner rings, the two double-half outer rings and the inner and outer layers of rolling bodies; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle of the axial distance of the inner circumference, the middle of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle of the inner circumference of the reducing middle ring to form the reducing middle ring, the double-row angular contact spherical rolling element tracks arranged at the inner circumference of the reducing middle ring are respectively provided with spherical rolling elements, the two ends of the double-row angular contact spherical rolling element tracks are correspondingly provided with a row of cylindrical roller tracks, the cylindrical roller tracks are respectively provided with cylindrical rollers, the deep groove spherical rolling element tracks arranged at the outer circumference of the reducing middle ring are respectively provided with a row of cylindrical roller tracks, the two ends of the deep groove spherical rolling element tracks are correspondingly, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half inner ferrules are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks in the middle of the inner circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, an angular contact spherical rolling element track is arranged at the outer circumference of each cylindrical roller inner retaining shoulder, the angular contact spherical rolling element tracks arranged on the two double-half inner ferrule cylindrical roller inner retaining shoulders respectively correspond to the double-row angular contact spherical rolling element tracks arranged on the inner circumference of the reducing middle ring, and a middle ball structure of the double-row angular contact ball bearing is formed by combining spherical,

the ball rolling device is characterized in that the two double-half outer rings are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the outer circumference of the variable-diameter middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer ring, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, three-point contact spherical rolling body tracks are arranged at the ends of the inner circumferences of the cylindrical rollers inner retaining shoulders, the three-point contact spherical rolling body tracks arranged on the two double-half outer ring cylindrical rollers inner retaining shoulders correspond to the deep groove spherical rolling body tracks arranged on the outer circumference of the middle ring respectively, and a three-point contact ball bearing middle ball structure.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the double-row deep groove ball bearing comprises a reducing middle ring, a double-row deep groove ball bearing inner ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row deep groove spherical rolling element tracks at the middle part of the axial distance of the inner circumference, the middle part of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring to form the reducing middle ring, the spherical rolling elements are respectively arranged in the deep groove spherical rolling element tracks arranged at the inner circumference and the outer circumference of the reducing middle ring, the two ends of the deep groove double-row spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring are respectively provided with a row of cylindrical roller tracks at intervals corresponding to each other, the cylindrical rollers are respectively arranged in the cylindrical roller tracks, the two ends of the circle of spherical rolling element tracks at the middle, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the inner ring of the double-row deep groove ball bearing is coaxially arranged between the two double-half inner rings and corresponds to a double-row deep groove ball rolling element track arranged in the middle of the inner circumference of the reducing middle ring, and a middle ball structure of the double-row deep groove ball bearing is formed by combining ball rolling elements,

the two double-half inner rings are respectively arranged at two sides of the inner ring of the double-row deep groove ball bearing, the outer circumferences of the two double-half inner rings are respectively provided with a circle of cylindrical roller track, the outer ends of the two double-half inner ring cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,

the ball bearing is characterized in that the two double-half outer sleeves are coaxially arranged on two sides of a deep groove ball rolling body track in the middle of the outer circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, three-point contact ball rolling body tracks are arranged at the ends of the inner circumferences of the retaining shoulders in the cylindrical rollers respectively, the three-point contact ball rolling body tracks arranged on the inner retaining shoulders of the two double-half outer sleeve cylindrical rollers respectively correspond to the circle of deep groove ball rolling body track arranged in the middle of the outer circumference of the reducing middle ring, and the ball structure of the three-point.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a reducing middle ring, a deep groove ball bearing inner ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the outer circumference, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring to form the reducing middle ring, spherical rolling elements are arranged in the deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring, a row of circular ring roller tracks are respectively arranged at the intervals of the two ends of the deep groove spherical rolling element tracks, circular ring rollers are respectively arranged in the circular ring tracks, the spherical rolling elements are respectively arranged in the two circles of double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring, a row of cylindrical rolling element tracks, the cylindrical roller track is internally provided with a cylindrical roller,

the inner ring of the deep groove ball bearing is coaxially arranged between the two double-half inner rings and corresponds to a circle of deep groove spherical rolling body track arranged in the middle of the inner circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies

The two double-half inner rings are respectively arranged at two sides of the inner ring of the deep groove ball bearing, the outer circumferences of the two double-half inner rings are respectively provided with a circle of circular roller track,

the two double-half outer sleeves are coaxially arranged on two sides of a double-row angular contact spherical rolling element track in the middle of the outer circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, an angular contact spherical rolling element track is arranged on the inner circumference of each cylindrical roller inner retaining shoulder, the angular contact spherical rolling element tracks arranged on the two double-half outer sleeve cylindrical roller inner retaining shoulders correspond to the double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring respectively, and the double-row angular contact ball bearing is formed in a middle ball structure through combination of spherical.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a reducing middle ring, a deep groove ball bearing inner ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the outer circumference, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring to form the reducing middle ring, the spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring, two rows of cylindrical roller tracks are respectively arranged at the intervals of two ends of the double-row angular contact spherical rolling element tracks, cylindrical rollers are respectively arranged in the cylindrical roller tracks, the spherical rolling elements are arranged in the deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring, two rows of cylindrical roller, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the inner ring of the deep groove ball bearing is coaxially arranged between the two double-half inner rings and corresponds to a circle of deep groove spherical rolling body track arranged in the middle of the inner circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies,

the two double-half inner ferrules are respectively arranged at two sides of the inner ferrule of the deep groove ball bearing, the outer circumferences of the two double-half inner ferrules are respectively provided with a cylindrical roller track, the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,

the two double-half outer sleeves are coaxially arranged on two sides of a double-row angular contact spherical rolling element track in the middle of the outer circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve, cylindrical roller tracks are arranged in the middle of the inner circumference of each double-half outer sleeve, cylindrical roller outer retaining shoulders are arranged at the outer ends of the cylindrical roller tracks respectively, cylindrical roller inner retaining shoulders are arranged at the inner ends of the cylindrical roller tracks respectively, angular contact spherical rolling element tracks are arranged on the inner circumferences of the cylindrical roller inner retaining shoulders respectively, angular contact spherical rolling element tracks arranged on the inner retaining shoulders of the two double-half outer sleeves correspond to the double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring respectively, and a double-row angular contact ball bearing is.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the variable diameter middle ring, the two double-half inner rings, the two double-half outer rings and the inner and outer layers of rolling bodies; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the outer circumference, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring to form the reducing middle ring, the two circles of double-row angular contact spherical rolling element tracks at the outer circumference of the reducing middle ring are respectively provided with spherical rolling elements, the two ends of the double-row angular contact spherical rolling element tracks are respectively provided with a row of cylindrical roller tracks at intervals corresponding to each other, the cylindrical rollers are respectively arranged in the cylindrical roller tracks, the spherical rolling elements are arranged in the deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring, the two, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half inner ferrules are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the inner circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, three-point contact spherical rolling body tracks are arranged on the outer circumference of the end of each cylindrical roller inner retaining shoulder, the three-point contact spherical rolling body tracks arranged at the end heads of the two double-half inner ferrule cylindrical rollers respectively correspond to the deep groove spherical rolling body tracks arranged on the inner circumference of the middle ring, and a middle ball structure of the three-point contact ball bearing is formed by combining spherical rolling bodies,

the two double-half outer sleeves are coaxially arranged on two sides of a double-row angular contact spherical rolling element track in the middle of the outer circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, an angular contact spherical rolling element track is arranged in the middle of the inner circumference of each cylindrical roller inner retaining shoulder, the angular contact spherical rolling element tracks arranged on the two double-half outer sleeve cylindrical roller inner retaining shoulders correspond to the double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring respectively, and a double-row angular contact ball bearing mid-mounted ball structure is formed by combining.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the variable diameter middle ring, the two double-half inner rings, the two double-half outer rings and the inner and outer layers of rolling bodies; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the outer circumference, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring to form the reducing middle ring, the spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring, the two ends of the double-row angular contact spherical rolling element tracks are respectively provided with a row of cylindrical roller tracks at intervals corresponding to each other, the cylindrical rollers are respectively arranged in the cylindrical roller tracks, the spherical rolling elements are arranged in the deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring, and the two rows, tapered rollers are respectively arranged in the tapered roller tracks,

the two double-half inner ferrules are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the inner circumference of the reducing middle ring respectively, a circle of tapered roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, tapered roller outer retaining shoulders are arranged at the outer ends of the tapered roller tracks respectively, tapered roller inner retaining shoulders are arranged at the inner ends of the tapered roller tracks respectively, three-point contact spherical rolling body tracks are arranged on the outer circumference of the end of each tapered roller inner retaining shoulder, the three-point contact spherical rolling body tracks arranged on the two double-half inner ferrule tapered roller inner retaining shoulders respectively correspond to the deep groove spherical rolling body tracks arranged on the inner circumference of the reducing middle ring, and a middle ball structure of the three-point contact ball bearing is formed by combining the spherical rolling bodies,

the double-half outer ring coaxial centers are respectively arranged on two sides of a double-row angular contact spherical rolling element track in the middle of the outer circumference of the reducing middle ring, a circle of cylindrical roller track is respectively arranged in the middle of the inner circumference of the double-half outer ring, a cylindrical roller outer retaining shoulder is respectively arranged at the outer end of the cylindrical roller track, a cylindrical roller inner retaining shoulder is respectively arranged at the inner end of the cylindrical roller track, an angular contact spherical rolling element track is respectively arranged in the middle of the inner circumference of the cylindrical roller inner retaining shoulder, the angular contact spherical rolling element tracks arranged on the two double-half outer ring cylindrical roller inner retaining shoulders are respectively corresponding to the double-row angular contact spherical rolling element tracks arranged on the outer circumference of the middle ring, and a middle ball structure of the double-row angular contact ball bearing.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the variable diameter middle ring, the two double-half inner rings, the two double-half outer rings and the inner and outer layers of rolling bodies; the method is characterized in that: the distance between the middle part of the axial distance between the inner circumference and the outer circumference of the reducing middle ring is respectively provided with a deep groove spherical rolling body track to form the reducing middle ring, spherical rolling bodies are respectively arranged in the deep groove spherical rolling body tracks, two rows of cylindrical roller tracks are respectively arranged at the distance between the two ends of the deep groove spherical rolling body tracks on the inner circumference and the outer circumference of the reducing middle ring correspondingly, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half inner ferrules are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the inner circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, three-point contact spherical rolling body tracks are arranged on the outer circumferences of the ends of the cylindrical roller inner retaining shoulders, the three-point contact spherical rolling body tracks arranged at the ends of the two double-half inner ferrule cylindrical roller inner retaining shoulders correspond to the deep groove spherical rolling body tracks arranged in the middle of the inner circumference of the reducing middle ring respectively, and the ball structure of the three-point contact ball bearing is formed by combining the spherical

The ball bearing is characterized in that the two double-half outer sleeves are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the outer circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve, the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, three-point contact spherical rolling body tracks are arranged at the inner circumferential ends of the cylindrical roller inner retaining shoulders, the three-point contact spherical rolling body tracks arranged at the ends of the retaining shoulders in the two double-half outer sleeve cylindrical roller tracks respectively correspond to the deep groove spherical rolling body tracks arranged in the middle of the outer circumference of the reducing middle ring, and a three-point contact ball bearing middle-.

The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the double-row deep groove ball bearing comprises a variable-diameter middle ring, a double-row deep groove ball bearing outer ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the middle part of the axial distance of the outer circumference of the reducing middle ring is provided with two circles of double-row deep groove spherical rolling element tracks at the interval distance, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row deep groove spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring to form the reducing middle ring, spherical rolling elements are respectively arranged in the deep groove spherical rolling element tracks arranged at the inner circumference and the outer circumference of the reducing middle ring, two rows of cylindrical roller tracks are respectively arranged at the interval distances of two ends of the double-row deep groove spherical rolling element tracks arranged at the middle part of the outer circumference and the inner circumference of the reducing middle ring,

the outer rings of the double-row deep groove ball bearing are coaxially arranged between the two double-half outer rings and correspond to double-row deep groove ball rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring, and a middle ball structure of the double-row deep groove ball bearing is formed by combining ball rolling elements,

the two double-half outer rings are arranged at two sides of the outer ring of the double-row deep groove ball bearing, the inner circumferences of the two double-half outer rings are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,

the three-point contact spherical rolling element tracks arranged on the inner retaining shoulders of the two double-half inner ring cylindrical rollers correspond to the circle of deep groove ball rolling element tracks arranged in the middle of the inner circumference of the reducing middle ring respectively, and the ball structure of the deep groove ball bearing is formed by combining the spherical rolling elements.

The novel high-speed rail power bearing has the beneficial effects that:

because: high-speed rail bearings are precision instrument-grade components that are subjected to complex dynamic loads in complex moments, and are known: at present, because of numerous major defects of unbalanced stress, the double-section tapered roller bearing popular in the world often fails in advance due to roller skew and biting, and therefore, the double-section tapered roller bearing has the advantages that the stress is not balanced; the invention designs a mechanical structure of a middle ball in the middle of two rollers of a high-speed rail bearing according to the force balance principle, applies the mechanical advantages of two-point contact pure rolling friction of an angular contact ball bearing and a deep groove ball bearing and capability of bearing combined load to the middle of two rows of rollers of a double-row tapered roller bearing, provides stable and efficient axial force support and radial force support for the double-row tapered roller bearing, overcomes the inherent defect of stress concentration at the end of a tapered roller and the major defect of severe uneven stress in the axial load, and creates the mechanical structures of the middle ball of the double-row deep groove ball bearing and the middle ball of the double-row angular contact ball bearing arranged between the two rollers of the double-row cylindrical roller bearing and the double-row circular roller bearing. The creative effect of the ball placing is as follows:

1. because: deep groove ball bearing, double row angular contact ball bearing all have in the joint load always keep two points contact pure rolling friction's advantage, do not have sliding friction, its coefficient of friction (0, 001-0, 0012) is extremely low, and have best high-speed stable performance and rigidity, have fabulous contact ratio between its raceway and the steel ball, lubricated condition is reliable, very durable, need not frequent maintenance, have bear joint load good performance (SKF bearing-P290 page), so: the invention relates to a novel high-speed rail dynamic bearing, which creates an important mechanical structure point of a middle ball by utilizing the principle of two-point contact pure rolling friction of a deep groove ball bearing, creates a mechanical structure taking a double-row deep groove ball bearing and a double-row angular contact ball bearing as middle balls,

2. the effect of the middle ball bearing under the combined load can effectively offset the stress concentration of the small end of the double-section tapered roller, greatly reduce the roller deflection of the double-section tapered roller caused by uneven stress in the combined load, effectively reduce the original design of the inclination angle of the tapered roller, greatly reduce the friction and abrasion of the bearing, improve the rotating efficiency of the bearing, and has obvious significance for improving the mechanical efficiency, reducing the failure rate of the bearing, effectively prolonging the service life and the maintenance period of the bearing,

3. the combination of the middle ball and the cylindrical roller is adopted, because the cylindrical roller bearing has the lowest friction coefficient (0, 0008-0 and 001), under the action of the middle ball, the pressure sliding friction between the end head of the cylindrical roller and the flange of the ferrule is almost zero, the cylindrical roller bearing is favorable for the good lubrication of the end head of the roller and the flange of the ferrule, the friction heating of the roller is greatly reduced, the cylindrical roller is stressed more uniformly in high-speed rotation, and the technology is a new technology which is difficult to ensure the high-speed stability and good combined load performance of the aeroengine main shaft bearing of a high-speed iron bearing and a cylindrical rolling body,

4. the combination of the central ball and the ring roller is adopted, because the friction coefficient of the ring roller is only (0, 0010-0, 0012), especially the ring roller has good micro-aligning function and strong radial bearing capacity, and has a compact section of the needle bearing, and: the special annular arc surface of the circular roller can ensure that the load born by the roller is uniformly distributed on the contact surface of the roller and the raceway, so that: the combination of the central ball and the circular roller has no faults of roller stress concentration, roller deflection and the like, and has the characteristics of low friction, low temperature rise and long service life (taken from page P776 of SKF comprehensive type), 5, the data of the SKF bearing proves that: the rotating speed of the bearing with the inner diameter of 130 and the outer diameter of 230 and the deep groove ball bearing can reach 5600-3600 r/min (SKF bearing comprehensive type record P314 page), the rotating speed of the ring roller bearing can reach 2800-3800 r/min, the rotating speed of the cylindrical roller bearing can reach 3200-3400 r/min, and the rotating speed of the tapered roller bearing can only reach 1500-.

Drawings

In fig. 1, the central ball arranged in the middle of the inner circumference is a double-row angular contact ball bearing structure, cylindrical roller rails are arranged on two sides, the central ball arranged in the middle of the outer circumference is a deep groove ball bearing structure, and the reducing middle ring of the circular roller rails and a bearing cross-sectional view are respectively arranged on two sides.

Fig. 2 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the inner circumference are of a double-row angular contact ball bearing structure, cylindrical roller rails are disposed on both sides, the center balls disposed in the middle of the outer circumference are of a deep groove ball bearing structure, and the reducing center rings of the cylindrical roller rails and the bearing are disposed on both sides.

Fig. 3 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the inner circumference are of a double-row angular contact ball bearing structure, cylindrical roller rails are disposed on both sides, the center balls disposed in the middle of the outer circumference are of a three-point contact ball bearing structure, and the two sides are respectively provided with a reducing middle ring of the cylindrical roller rails and a bearing cross-sectional view.

Fig. 4 shows that the middle ball disposed in the middle of the inner circumference is a double-row deep groove ball bearing structure, cylindrical roller rails are disposed on both sides, the middle ball disposed in the middle of the outer circumference is a three-point contact ball bearing structure, and the reducing middle ring and the bearing cross-sectional view of the cylindrical roller rails are disposed on both sides.

Fig. 5 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the outer circumference have a double-row angular contact ball bearing structure, the cylindrical roller rails are disposed on both sides, the center balls disposed in the middle of the inner circumference have a deep groove ball bearing structure, and the reducing center rings of the circular roller rails and the bearing are disposed on both sides.

Fig. 6 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the outer circumference have a double-row angular contact ball bearing structure, cylindrical roller tracks are disposed on both sides of the center balls, the center balls disposed in the middle of the inner circumference have a deep groove ball bearing structure, and the two sides of the center balls are respectively provided with a reducing center ring of the cylindrical roller tracks and a bearing cross-sectional view.

Fig. 7 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the outer circumference have a double-row angular contact ball bearing structure, cylindrical roller tracks are disposed on both sides of the center balls, a three-point contact ball bearing structure is disposed in the middle of the inner circumference, and a variable diameter center ring and a bearing cross-sectional view of the cylindrical roller tracks are disposed on both sides of the center ball.

Fig. 8 shows a cross-sectional view of a bearing in which the center balls disposed in the middle of the outer circumference have a double-row angular contact ball bearing structure, cylindrical roller tracks are disposed on both sides of the center balls, a three-point contact ball bearing structure is disposed in the middle of the inner circumference, and a tapered middle ring and a bearing cross-sectional view of tapered roller tracks are disposed on both sides of the center balls.

Fig. 9, the middle balls respectively arranged at intervals in the middle of the inner and outer circumferences are all of a three-point contact ball bearing structure, and the two ends of the inner and outer circumferences are respectively provided with a reducing middle ring of a cylindrical roller track and a bearing cross section.

Fig. 10 shows a double-row deep groove ball bearing structure with a central ball disposed in the middle of the outer circumference, cylindrical roller tracks disposed on both sides, a three-point contact ball bearing structure with a central ball disposed in the middle of the inner circumference, and a reducing central ring and a bearing cross-sectional view with cylindrical roller tracks disposed on both sides.

In the figure: 1. the inner ring of the deep groove ball bearing comprises a diameter-variable middle ring, 2, two and a half inner rings, 3, two and a half outer rings, 4, a deep groove ball bearing outer ring, 5, a deep groove ball bearing inner ring, 6, a double-row deep groove ball bearing inner ring, 7, a double-row deep groove ball bearing outer ring, 8, a double-row deep groove ball rolling element track, 9, a double-row angular contact ball rolling element ball track, 10, a deep groove ball rolling element track, 11, an angular contact ball rolling element track, 12, a three-point contact ball rolling element track, 13, a circular ring roller track, 14, a cylindrical roller track, 15, a conical roller track 16, a circular ring roller, 17, a cylindrical roller, 18 conical rollers, 19, a cylindrical roller outer retaining shoulder 20, a cylindrical roller inner retaining shoulder, 21 a conical roller outer retaining shoulder, 22, a conical roller inner retaining shoulder, 23 a ball liner track.

The specific implementation mode is as follows:

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

the first embodiment is as follows:

the novel high-speed rail wheel axle power bearing shown in fig. 1 comprises: the deep groove ball bearing comprises a variable-diameter middle ring 1, two double-half inner rings 2, two double-half outer rings 3, a deep groove ball bearing outer ring 4, an inner layer of rolling body and an outer layer of rolling body; two circles of double-row angular contact spherical rolling element tracks 9 are arranged in the middle of the axial distance of the inner circumference of the reducing middle ring 1 at intervals, a circle of deep groove spherical rolling element track 10 is arranged in the middle of the axial distance of the outer circumference of the reducing middle ring 1, the deep groove spherical rolling element raceway 10 is arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1 to form the reducing middle ring, spherical rolling elements 24 are respectively arranged in the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1, a row of cylindrical roller tracks 14 are respectively arranged at intervals corresponding to two ends of the two circles of double-row angular contact spherical rolling element tracks 9, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14, spherical rolling elements 24 are arranged in the deep groove spherical rolling element tracks 10 arranged in the outer circumference of the reducing middle ring 1, and a row of circular ring roller tracks 13 are A ring roller 16 is respectively arranged in the ring roller track 13,

the two double-half inner ferrules 2 are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the outer circumference of each of the two double-half inner ferrules 2, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, an angular contact spherical rolling element track 11 is arranged on the outer circumference of each cylindrical roller inner retaining shoulder 20, the angular contact spherical rolling element tracks 11 arranged on the cylindrical roller outer retaining shoulders 19 of the two double-half inner ferrules 2 respectively correspond to the double-row angular contact spherical rolling element tracks 9 arranged on the inner circumference of the reducing middle ring 1, and a double-row angular contact ball bearing mid-set structure is formed by combining two rows,

the outer ring 4 of the deep groove ball bearing is coaxially arranged between two double-half outer rings 3 on the outer circumference of the reducing middle ring 1 and corresponds to a circle of deep groove spherical rolling body track 10 arranged in the middle of the outer circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies 24,

the two double-half outer rings 3 are respectively arranged at two ends of the outer ring 4 of the deep groove ball bearing, and the inner circumferences of the two double-half outer rings 3 are respectively provided with a circle of circular roller track 13.

Example 2:

the novel high-speed rail wheel axle power bearing shown in fig. 2 comprises: the deep groove ball bearing comprises a variable-diameter middle ring, two double-half inner rings 2, two double-half outer rings 3, a deep groove ball bearing outer ring 4, an inner layer of rolling body and an outer layer of rolling body; two circles of double-row angular contact spherical rolling element tracks 9 are arranged in the middle of the axial distance of the inner circumference of the reducing middle ring 1 at intervals, a circle of deep groove spherical rolling element track 10 is arranged in the middle of the axial distance of the outer circumference of the reducing middle ring 1, the deep groove spherical rolling element raceway 10 is arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1 to form the reducing middle ring, spherical rolling elements 24 are respectively arranged in the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1, a row of cylindrical roller tracks 14 are respectively arranged at intervals corresponding to two ends of the two circles of double-row angular contact spherical rolling element tracks 9, cylindrical rollers 19 are respectively arranged in the cylindrical roller tracks 14, spherical rolling elements 24 are arranged in the deep groove spherical rolling element tracks 10 arranged in the middle of the outer circumference of the reducing middle ring 1, and a row of cylindrical roller 14, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14,

the two double-half inner ferrules 2 are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks 9 arranged on the inner circumference of the reducing middle ring 1 respectively, the middle parts of the outer circumferences of the two double-half inner ferrules 2 are provided with a circle of cylindrical roller track 14 respectively, the outer ends of the cylindrical roller tracks 14 are provided with cylindrical roller outer retaining shoulders 19 respectively, the inner ends of the cylindrical roller tracks 14 are provided with cylindrical roller inner retaining shoulders 20 respectively, the outer circumferences of the cylindrical roller inner retaining shoulders 20 are provided with angular contact spherical rolling element tracks 11 respectively, the angular contact spherical rolling element tracks 11 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half inner ferrules 2 correspond to the double-row angular contact spherical rolling element tracks 9 arranged on the inner circumference of the reducing middle ring 1 respectively, and the spherical rolling elements 24 are combined to form a mid-position ball structure of the,

the outer ring 4 of the deep groove ball bearing is coaxially arranged between the two double-half outer rings 3 and corresponds to a circle of deep groove spherical rolling body track 10 arranged in the middle of the outer circumference of the reducing middle ring 1, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies 24,

the two double-half outer rings 3 are respectively arranged at two ends of the outer ring 4 of the deep groove ball bearing, the inner circumferences of the two double-half outer rings 3 are respectively provided with a circle of cylindrical roller track 14, and the outer ends of the cylindrical roller tracks 14 are respectively provided with a cylindrical roller outer retaining shoulder 19.

Example 3:

the novel high-speed rail wheel axle power bearing shown in fig. 3 comprises: the variable diameter inner ring comprises a variable diameter middle ring 1, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; two circles of double-row angular contact spherical rolling element tracks 9 are arranged in the middle of the axial distance of the inner circumference of the reducing middle ring 1 at intervals, a circle of deep groove spherical rolling element track 10 is arranged in the middle of the axial distance of the outer circumference of the reducing middle ring 1, the deep groove spherical rolling element raceway 10 is arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1 to form the reducing middle ring, spherical rolling elements 24 are respectively arranged in the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1, a row of cylindrical roller tracks 14 are respectively arranged at intervals corresponding to two ends of the two circles of double-row angular contact spherical rolling element tracks 9, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14, spherical rolling elements 24 are arranged in the deep groove spherical rolling element tracks 10 arranged in the middle of the outer circumference of the reducing middle ring 1, and a row of cylindrical roller 14, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14,

the two double-half inner ferrules 2 are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the outer circumference of each of the two double-half inner ferrules 2, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, an angular contact spherical rolling element track 11 is arranged on the outer circumference of each cylindrical roller inner retaining shoulder 20, the angular contact spherical rolling element tracks 11 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half inner ferrules 2 respectively correspond to the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the reducing middle ring 1, and are combined through spherical rolling elements 24 to form a mid-position ball structure,

the two double-half outer rings 3 are coaxially arranged on two sides of a deep groove spherical rolling body track 10 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer rings 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, three-point contact spherical rolling body tracks 12 are arranged at the ends of the inner circumferences of the cylindrical roller inner retaining shoulders 20 respectively, the three-point contact spherical rolling body tracks 12 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half outer rings 3 correspond to the deep groove spherical rolling body tracks 10 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, and the three-point contact ball bearing mid-set ball structure is formed by.

Example 4:

the novel high-speed rail wheel axle power bearing shown in fig. 4 comprises: the rolling mechanism comprises a reducing middle ring 1, a double-row deep groove ball bearing inner ring 6, two double-half inner rings 2, two double-half outer rings 3 and inner and outer layers of rolling bodies; the diameter-variable middle ring 1 is provided with two rings of deep groove ball rolling element tracks 8 at the middle of the axial distance of the inner circumference, the middle of the axial distance of the outer circumference of the diameter-variable middle ring 1 is provided with one ring of deep groove ball rolling element tracks 10, the deep groove ball rolling element raceways 10 are arranged between the two rings of tracks of the double-row deep groove ball rolling element tracks 8 arranged at the middle of the inner circumference of the diameter-variable middle ring 1 to form a diameter-variable middle ring, the ball rolling elements 24 are respectively arranged in the double-row deep groove ball rolling element tracks 8 arranged at the middle of the inner circumference of the diameter-variable middle ring 1, the two ends of the deep groove ball rolling element tracks 8 are respectively provided with a row of cylinder roller tracks 14 at intervals corresponding, the cylinder rolling elements 17 are respectively arranged in the cylinder roller tracks 14, the ball rolling elements 24 are arranged in the circle of ball rolling element tracks 10 arranged at the middle of the outer circumference of the diameter-variable middle ring 1, cylindrical rollers 17 are each provided in the cylindrical roller track 14,

the inner ring 6 of the double-row deep groove ball bearing is coaxially arranged between the two double-half inner rings 2, corresponds to a double-row deep groove ball rolling element track 8 arranged in the middle of the inner circumference of the reducing middle ring 1, and is combined through a spherical rolling element 24 to form a middle ball structure of the double-row deep groove ball bearing,

the two double-half inner ring 2 are respectively arranged at two sides of the inner ring 6 of the double-row deep groove ball bearing, the outer circumferences of the two double-half inner ring 2 are respectively provided with a circle of cylindrical roller track 14, the outer ends of the cylindrical roller tracks 14 are respectively provided with a cylindrical roller outer retaining shoulder 19,

the two double-half outer rings 3 are coaxially arranged on two sides of a deep groove ball-shaped rolling body track 10 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer rings 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, three-point contact ball-shaped rolling body tracks 12 are arranged on the inner circumference of the end head of each cylindrical roller inner retaining shoulder 20, the three-point contact ball-shaped rolling body tracks 12 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half outer rings 3 correspond to the circle of deep groove ball-shaped rolling body tracks 10 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, and the middle ball structure of the double.

Example 5:

the novel high-speed rail wheel axle power bearing shown in fig. 5 comprises: the deep groove ball bearing comprises a reducing middle ring 1, a deep groove ball bearing inner ring 5, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; the reducing middle ring 1 is provided with two circles of double-row angular contact spherical rolling element tracks 9 at the middle of the axial distance of the outer circumference, the middle of the axial distance of the inner circumference of the reducing middle ring 1 is provided with a circle of deep groove spherical rolling element tracks 10, deep groove spherical rolling element raceways 10 are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged at the middle of the outer circumference of the reducing middle ring 1 to form the reducing middle ring, spherical rolling elements 24 are arranged in the deep groove spherical rolling element tracks 10, a row of circular ring roller tracks 13 are respectively arranged at the intervals of two ends of the deep groove spherical rolling element tracks 10, circular ring rollers 16 are respectively arranged in the circular ring roller tracks 13, the spherical rolling elements 24 are respectively arranged in the double-row angular contact spherical rolling element tracks 9 arranged at the middle of the outer circumference of the reducing middle ring 1, a row of cylindrical roller tracks 14 is respectively arranged at the intervals of two ends of the double-row angular, cylindrical rollers 17 are each provided in the cylindrical roller track 14,

the deep groove ball bearing inner ring 5 is coaxially arranged between the two double-half inner rings 2, corresponds to a circle of deep groove spherical rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1, and is combined through spherical rolling bodies 24 to form a middle ball structure of the deep groove ball bearing

The two double-half inner ring 2 are respectively arranged at two ends of the deep groove ball bearing inner ring 5, the outer circumferences of the two double-half inner ring 2 are respectively provided with a circle of circular roller track 13,

the two double-half outer races 3 are coaxially arranged on two sides of a double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle race 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer races 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, angular contact spherical rolling element tracks 11 are arranged on the inner circumference of each cylindrical roller inner retaining shoulder 20, the angular contact spherical rolling element tracks 11 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half outer races 3 respectively correspond to the two double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the reducing middle race 1, and the central ball structure of the double-row angular contact ball bearing is formed by combining spherical rolling.

Example 6:

the "novel high-speed rail wheel axle power bearing" shown in fig. 6 includes: the deep groove ball bearing comprises a reducing middle ring 1, a deep groove ball bearing inner ring 5, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; the middle ring 1 with variable diameter is provided with two circles of double-row angular contact spherical rolling element tracks 9 in the middle of the axial distance of the outer circumference, the middle of the axial distance of the inner circumference of the middle ring 1 with variable diameter is provided with a circle of deep groove spherical rolling element tracks 10, the deep groove spherical rolling element raceways 10 are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the middle ring 1 with variable diameter to form a variable diameter middle ring, the deep groove spherical rolling element tracks 10 arranged in the middle of the inner circumference of the middle ring 1 with variable diameter are internally provided with spherical rolling elements 24, two rows of cylindrical roller tracks 14 are respectively arranged at the intervals of two ends of the deep groove spherical rolling element tracks 10, the tracks are internally provided with cylindrical rollers 17, the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the middle ring 1 with variable diameter are respectively provided with spherical rolling elements, cylindrical rollers 17 are each provided in the cylindrical roller track 14,

The two double-half inner ring 2 are respectively arranged at two sides of the deep groove ball bearing inner ring 5, the outer circumferences of the two double-half inner ring 2 are respectively provided with a cylindrical roller track 14, the outer end of the cylindrical roller track 14 is provided with a cylindrical roller outer retaining shoulder 19,

the two double-half outer races 3 are coaxially arranged on two sides of a double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle race 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer races 3, cylindrical roller outer retaining shoulders 19 are arranged at the outer ends of the cylindrical roller tracks 14 of the two double-half outer races 3, cylindrical roller inner retaining shoulders 20 are arranged at the inner ends of the cylindrical roller tracks 14 respectively, angular contact spherical rolling element tracks 11 arranged on the inner circumferences of the cylindrical roller inner retaining shoulders 20 respectively correspond to the double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle race 1 respectively, and the spherical rolling elements 24 are combined to form a double-row angular contact ball bearing mid-set ball structure.

Example 7:

the novel high-speed rail wheel axle power bearing shown in fig. 7 comprises: one diameter variation: 1. two double-half inner rings 2, two double-half outer rings 3, and an inner layer rolling body and an outer layer rolling body; the middle part of the axial distance of the outer circumference of the reducing middle ring 1 is provided with two circles of double-row angular contact spherical rolling element tracks 9 at an interval distance, the middle part of the axial distance of the inner circumference of the reducing middle ring 1 is provided with a circle of deep groove spherical rolling element tracks 10, deep groove spherical rolling element raceways 10 of the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks 9 arranged at the middle part of the inner circumference of the reducing middle ring 1 to form a reducing middle ring, spherical rolling elements 24 are arranged in the deep groove spherical rolling element tracks 10 arranged at the middle part of the inner circumference of the reducing middle ring 1, two rows of cylindrical roller tracks 14 are respectively arranged at intervals corresponding to two ends of the deep groove spherical rolling element tracks 10, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks, spherical rolling elements 24 are respectively arranged in the double-row angular contact spherical rolling element tracks 9 arranged at the middle part of the outer circumference of the reducing middle ring 1, cylindrical rolling elements 17 are arranged in the cylindrical roller paths 14,

the two double-half inner ferrules 2 are coaxially arranged on two sides of a deep groove spherical rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the outer circumference of each double-half inner ferrule 2, a cylindrical roller track 14 is arranged in the middle of the outer circumference, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, three-point contact spherical rolling body tracks 12 are arranged on the outer circumference of the end of each cylindrical roller inner retaining shoulder 20, three-point contact spherical rolling body tracks 12 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half inner ferrules 2 respectively correspond to the deep groove spherical rolling body tracks 10 arranged in the inner circumference of the reducing middle ring 1, and a three-point contact ball bearing mid-ball structure is formed by combining spherical rolling bodies 24,

the two double-half outer rings 3 are coaxially arranged at two sides of a double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer rings 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, angular contact spherical rolling element tracks 11 are arranged on the inner circumference of each cylindrical roller inner retaining shoulder 20, the angular contact spherical rolling element tracks 11 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half outer rings 3 respectively correspond to the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the reducing middle ring 1, and the double-row angular contact spherical ball bearing is formed by combining spherical rolling elements 24.

Example 8:

the "novel high-speed rail wheel axle power bearing" shown in fig. 8 includes: the variable diameter inner ring comprises a variable diameter middle ring 1, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; the middle ring 1 with variable diameter is provided with two rings of double-row angular contact spherical rolling element tracks 9 in the middle of the axial distance of the outer circumference, the middle of the axial distance of the inner circumference of the middle ring 1 with variable diameter is provided with a ring of deep groove spherical rolling element tracks 10, the deep groove spherical rolling element raceways 10 are arranged between the two rings of tracks of the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the middle ring 1 with variable diameter to form a middle ring with variable diameter, the deep groove spherical rolling element tracks 10 arranged in the middle of the inner circumference of the middle ring 1 with variable diameter are internally provided with spherical rolling elements 24, two rows of conical roller tracks 15 are arranged at the intervals of the two ends of the deep groove spherical rolling element tracks 10 correspondingly, conical rollers 18 are respectively arranged in the conical roller tracks 15, the double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the middle ring 1 with variable diameter are respectively provided with spherical rolling elements 24, cylindrical rollers 17 are each provided in the cylindrical roller track 14,

the two double-half inner ferrules 2 are coaxially arranged on two sides of a deep groove spherical rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of tapered roller track 15 is arranged in the middle of the outer circumference of each of the two double-half inner ferrules 2, a tapered roller outer retaining shoulder 21 is arranged at the outer end of each tapered roller track 15, a tapered roller inner retaining shoulder 22 is arranged at the inner end of each tapered roller track 15, three-point contact spherical rolling body tracks 12 are arranged on the outer circumference of the end of each tapered roller inner retaining shoulder 22, the three-point contact spherical rolling body tracks 12 arranged on the tapered roller inner retaining shoulders 22 of the two double-half inner ferrules 2 respectively correspond to the deep groove spherical rolling body tracks 10 arranged in the inner circumference of the reducing middle ring 1, and are combined through spherical rolling bodies 24 to form a mid-ball structure of a three-point contact ball,

the two double-half outer races 3 are coaxially arranged on two sides of a double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle race 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer races 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, angular contact spherical rolling element tracks 11 are arranged on the inner circumference of each cylindrical roller inner retaining shoulder 20 respectively, the angular contact spherical rolling element tracks 11 arranged on the two double-half outer races 3 correspond to the double-row angular contact spherical rolling element track 9 arranged on the outer circumference of the reducing middle race 1 respectively, and a middle ball structure of the three-point contact ball bearing is formed by combining spherical rolling.

Example 9:

the "novel high-speed rail wheel axle power bearing" shown in fig. 9 includes: the variable diameter inner ring comprises a variable diameter middle ring 1, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; the distance between the middle part of the axial distance between the inner circumference and the outer circumference of the reducing middle ring 1 is respectively provided with a circle of deep groove spherical rolling body tracks 10 to form the reducing middle ring, spherical rolling bodies 24 are respectively arranged in the deep groove spherical rolling body tracks 10, two rows of cylindrical roller tracks 14 are respectively arranged at the distance between the two ends of the deep groove spherical rolling body tracks 10 respectively arranged at the inner circumference and the outer circumference of the reducing middle ring 1, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14,

the two double-half inner ferrules 2 are coaxially arranged on two sides of a deep groove spherical rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the outer circumference of each of the two double-half inner ferrules 2, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, a spherical rolling body track 12 in three-point contact is arranged on the outer circumference of the end of the cylindrical roller inner retaining shoulder 20, the spherical rolling body track 12 in three-point contact arranged on the two double-half inner ferrules 2 corresponds to the deep groove spherical rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1, and a three-point contact ball bearing mid-ball structure is formed by combining the spherical rolling

The two double-half outer rings 3 are coaxially arranged at two sides of a double-row angular contact spherical rolling element track 9 arranged in the middle of the outer circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the inner circumference of each of the two double-half outer rings 3, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each cylindrical roller track 14, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of each cylindrical roller track 14, spherical rolling element tracks 12 in three-point contact are arranged on the inner circumference of the end of each cylindrical roller inner retaining shoulder 20, the spherical rolling element tracks 12 in three-point contact arranged on the two double-half outer rings 3 correspond to deep groove spherical rolling element tracks 10 arranged in the middle of the outer circumference of the reducing middle ring, and a middle ball structure of the three-point contact ball bearing is formed by combining the.

Example 10:

the "novel high-speed rail wheel axle power bearing" shown in fig. 10 includes: the rolling mechanism comprises a reducing middle ring 1, a double-row deep groove ball bearing outer ring 7, two double-half inner rings 2, two double-half outer rings 3, an inner layer of rolling body and an outer layer of rolling body; the diameter-variable middle ring 1 is provided with two circles of double-row deep groove spherical rolling element tracks 8 in the middle of the axial distance of the outer circumference, the diameter-variable middle ring 1 is provided with a circle of deep groove spherical rolling element tracks 10 in the middle of the axial distance of the inner circumference, the deep groove spherical rolling element raceways 10 are arranged between the two circles of tracks of the double-row deep groove spherical rolling element tracks 8 arranged in the middle of the outer circumference of the diameter-variable middle ring 1 to form a diameter-variable middle ring, the deep groove spherical rolling element tracks 10 arranged in the middle of the inner circumference of the diameter-variable middle ring 1 are respectively provided with spherical rolling elements 24, two rows of cylindrical rollers 14 are respectively arranged at intervals corresponding to the two ends of the deep groove spherical rolling element tracks 10, the cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 14, the double-row deep groove spherical rolling element tracks 8 arranged in the middle of the outer circumference of the diameter-variable middle ring 1 are respectively provided with spherical rolling elements 24, two rows of cylindrical rolling, cylindrical rollers 17 are each provided in the cylindrical roller track 14,

the outer ring 7 of the double-row deep groove ball bearing is coaxially arranged between the two double-half outer rings 3 and corresponds to a double-row deep groove ball rolling body track 8 arranged in the middle of the outer circumference of the reducing middle ring 1, and a middle ball structure of the double-row deep groove ball bearing is formed by combining spherical rolling bodies 24,

the two double-half outer rings 3 are arranged at two sides of the outer ring 7 of the double-row deep groove ball bearing, the inner circumferences of the two double-half outer rings 3 are respectively provided with a circle of cylindrical roller track 14, the outer ends of the cylindrical roller tracks 14 are respectively provided with a cylindrical roller outer retaining shoulder 19,

the two double-half inner ferrules 2 are coaxially arranged on two sides of a deep groove ball rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, a circle of cylindrical roller track 14 is arranged in the middle of the outer circumference of each of the two double-half inner ferrules 2, a cylindrical roller outer retaining shoulder 19 is arranged at the outer end of each of the cylindrical roller tracks, a cylindrical roller inner retaining shoulder 20 is arranged at the inner end of the inner circumference of each of the cylindrical roller tracks respectively, a three-point contact ball rolling body track 12 is arranged on the outer circumference of the end of each of the cylindrical roller inner retaining shoulders 20, the three-point contact ball rolling body tracks 12 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half inner ferrules 2 correspond to the circle of deep groove ball rolling body track 10 arranged in the middle of the inner circumference of the reducing middle ring 1 respectively, and a mid-ball.

Claims

1. The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a variable-diameter middle ring, two double-half inner rings, two double-half outer rings, a deep groove ball bearing outer ring, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle of the axial distance of the inner circumference, the middle of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, deep groove spherical rolling element raceways of the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks on the inner circumference of the reducing middle ring to form the reducing middle ring, the two circles of double-row angular contact spherical rolling element tracks on the middle of the inner circumference of the reducing middle ring are respectively provided with spherical rolling elements, two rows of cylindrical roller tracks are respectively arranged at the intervals of two ends of the double-row angular contact spherical rolling element tracks, cylindrical rollers are respectively arranged in the cylindrical roller tracks, the spherical rolling elements are arranged in the deep groove spherical rolling element tracks on the middle of the outer circumference of the reducing middle ring, two rows of circular ring roller, the circular roller track is internally provided with a circular roller,

the two double-half inner ferrules are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the inner circumference of the reducing middle ring respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each double-half inner ferrule, a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track, a cylindrical roller inner retaining shoulder is arranged at the inner end of each cylindrical roller track, an angular contact spherical rolling element track is arranged on the outer circumference of each cylindrical roller inner retaining shoulder, the angular contact spherical rolling element tracks arranged on the two double-half inner ferrule cylindrical roller inner retaining shoulders respectively correspond to the double-row angular contact spherical rolling element tracks arranged in the middle of the inner circumference of the reducing middle ring, and a double-row angular contact ball bearing mid-mounted ball structure is formed by combining,

the outer rings of the deep groove ball bearing are coaxially arranged between the two double-half outer rings and correspond to a circle of deep groove spherical rolling body track arranged in the middle of the outer circumference of the reducing middle ring, and a middle ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies,

2. The novel high-speed rail wheel shaft power bearing of claim 1, which is characterized in that: the reducing middle ring is provided with a circle of deep groove spherical rolling body tracks at the middle part of the outer circumference, two ends of the deep groove spherical rolling body tracks are correspondingly provided with a row of cylindrical roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the inner circumferences of the two double-half outer rings are respectively provided with a circle of cylindrical roller track, and the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder.

3. The novel high-speed rail wheel shaft power bearing according to any one of claims 1-2, characterized in that: the three-point contact spherical rolling element tracks arranged on the two double-half outer ring cylindrical rollers respectively correspond to the deep groove spherical rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring, and the ball structure of the three-point contact ball bearing is formed by combining the spherical rolling elements.

4. The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the double-row deep groove ball bearing comprises a reducing middle ring, a double-row deep groove ball bearing inner ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row deep groove spherical rolling element tracks at the middle part of the axial distance of the inner circumference, the middle part of the axial distance of the outer circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row deep groove spherical rolling element tracks on the inner circumference of the reducing middle ring to form the reducing middle ring, the deep groove spherical rolling element tracks on the inner circumference and the outer circumference of the reducing middle ring are respectively provided with spherical rolling elements, the two ends of the double-row deep groove spherical rolling element tracks on the middle part of the inner circumference of the reducing middle ring are respectively provided with a row of cylindrical roller tracks at intervals, the two ends of the double-row cylindrical roller tracks on the middle part of the outer circumference of the reducing middle ring are respectively provided with a row of cylindrical roller tracks at intervals, and the cylindrical rollers are respectively,

the two double-half inner rings are arranged at two sides of the inner ring of the double-row deep groove ball bearing, the outer circumferences of the two double-half inner rings are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,

the two double-half outer sleeves are coaxially arranged on two sides of a deep groove ball rolling element track in the middle of the outer circumference of the reducing middle ring, cylindrical roller tracks are respectively arranged in the middle of the inner circumference of the two double-half outer sleeves, cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the cylindrical roller tracks, cylindrical roller inner retaining shoulders are respectively arranged at the inner ends of the cylindrical roller tracks, three-point contact ball rolling element tracks are respectively arranged at the ends of the inner circumferences of the cylindrical roller inner retaining shoulders, the three-point contact ball rolling element tracks arranged on the two double-half outer sleeve cylindrical roller inner retaining shoulders are respectively corresponding to a circle of deep groove ball rolling element tracks arranged in the middle of the outer circumference of the reducing middle ring, and a double-row angular contact ball bearing middle-arranged ball structure is formed through combination.

5. The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the deep groove ball bearing comprises a reducing middle ring, a deep groove ball bearing inner ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the reducing middle ring is provided with two circles of double-row angular contact spherical rolling element tracks at the middle part of the axial distance of the outer circumference, the middle part of the axial distance of the inner circumference of the reducing middle ring is provided with a circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row angular contact spherical rolling element tracks corresponding to the outer circumference of the reducing middle ring to form the reducing middle ring, spherical rolling elements are arranged in the deep groove spherical rolling element tracks arranged at the middle part of the inner circumference of the reducing middle ring, a row of circular ring roller tracks are respectively arranged at the intervals of the two ends of the deep groove spherical rolling element tracks corresponding to the inner circumference of the reducing middle ring, circular ring rollers are respectively arranged in the circular ring roller tracks, the spherical rolling elements are respectively arranged in the double-row spherical rolling element tracks arranged at the middle part of the outer circumference of the reducing middle ring, a row of cylindrical roller tracks are respectively arranged, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half outer races are coaxially arranged on two sides of a double-row angular contact spherical rolling element track in the middle of the outer circumference of the reducing middle race, cylindrical roller tracks are respectively arranged in the middle of the inner circumference of the two double-half outer races, cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the cylindrical roller tracks, cylindrical roller inner retaining shoulders are respectively arranged at the inner ends of the cylindrical roller tracks, angular contact spherical rolling element tracks are respectively arranged on the inner circumference of the cylindrical roller inner retaining shoulders, the angular contact spherical rolling element tracks arranged on the inner retaining shoulders of the two double-half outer races of the cylindrical roller tracks are respectively corresponding to the double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the reducing middle race, and a middle ball structure of the double-row angular contact ball bearing.

6. The novel high-speed rail wheel shaft power bearing of claim 5, is characterized in that: the reducing middle ring is provided with a circle of cylindrical roller tracks at the two ends of a circle of deep groove spherical rolling body track arranged in the middle of the inner circumference at intervals, cylindrical rollers are arranged in the cylindrical roller tracks,

the outer circumferences of the two double-half inner ferrules are respectively provided with a cylindrical roller track, and the outer ends of the cylindrical roller tracks of the two double-half inner ferrules are respectively provided with a cylindrical roller outer retaining shoulder.

7. The novel high-speed rail wheel shaft power bearing according to any one of claims 5 to 6, characterized in that: the two double-half inner ferrules are coaxially arranged on two sides of a deep groove spherical rolling body track in the middle of the inner circumference of the reducing middle ring respectively, cylindrical roller tracks are arranged in the middle of the outer circumferences of the two double-half inner ferrules respectively, cylindrical roller outer retaining shoulders are arranged at the outer ends of the cylindrical roller tracks respectively, cylindrical roller inner retaining shoulders are arranged at the inner ends of the cylindrical roller tracks respectively, three-point contact spherical rolling body tracks are arranged on the outer circumferences of the ends of the cylindrical roller inner retaining shoulders respectively, the three-point contact spherical rolling body tracks arranged on the two double-half inner ferrule cylindrical roller inner retaining shoulders correspond to the deep groove spherical rolling body tracks arranged on the inner circumference of the middle ring respectively, and a ball structure of the three-point contact ball bearing is formed by combining spherical rolling bodies.

8. The novel high-speed rail wheel shaft power bearing according to any one of claims 5 to 7, characterized in that: a circle of deep groove spherical rolling body track arranged in the middle of the inner circumference of the reducing middle ring is provided with a row of tapered roller tracks at intervals corresponding to the two ends of the track respectively, tapered rollers are arranged in the tracks respectively,

the middle parts of the outer circumferences of the two double-half inner ferrules are respectively provided with a tapered roller track, the outer ends of the tapered roller tracks are respectively provided with a tapered roller outer retaining shoulder, the inner ends of the tapered roller tracks are respectively provided with a tapered roller inner retaining shoulder, and the outer circumferences of the ends of the tapered roller inner retaining shoulders are respectively provided with a three-point contact spherical rolling element track.

9. The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the variable diameter middle ring, the two double-half inner rings, the two double-half outer rings and the inner and outer layers of rolling bodies; the method is characterized in that: the distance between the middle part of the axial distance between the inner circumference and the outer circumference of the reducing middle ring is respectively provided with a deep groove spherical rolling body track to form the reducing middle ring, spherical rolling bodies are respectively arranged in the deep groove spherical rolling body tracks, two rows of cylindrical roller tracks are respectively arranged at the distance between the two ends of the deep groove spherical rolling body tracks on the inner circumference and the outer circumference of the reducing middle ring correspondingly, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the two double-half inner ring coaxial centers are arranged on two sides of a deep groove spherical rolling body track in the middle of the inner circumference of the reducing middle ring, cylindrical roller tracks are respectively arranged in the middle of the outer circumferences of the two double-half inner ring cylindrical roller tracks, cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the two double-half inner ring cylindrical roller tracks, cylindrical roller inner retaining shoulders are respectively arranged at the inner ends of the two double-half inner ring cylindrical roller tracks, three-point contact spherical rolling body tracks are respectively arranged on the outer circumferences of the ends of the cylindrical roller inner retaining shoulders of the two double-half inner ring cylindrical rollers, the three-point contact spherical rolling body tracks arranged at the ends of the two double-half inner ring cylindrical roller inner retaining shoulders are respectively corresponding to the deep groove spherical rolling body tracks arranged in the middle of the inner circumference of

The ball rolling element track with three-point contact is arranged at the end of the inner blocking shoulder of the cylindrical roller track, and is respectively corresponding to the deep groove ball rolling element track arranged at the middle part of the outer circumference of the variable diameter middle ring.

10. The utility model provides a "novel high-speed railway wheel spindle power bearing", includes: the double-row deep groove ball bearing comprises a variable-diameter middle ring, a double-row deep groove ball bearing outer ring, two double-half inner rings, two double-half outer rings, an inner layer of rolling body and an outer layer of rolling body; the method is characterized in that: the middle ring of the reducing diameter is provided with two circles of double-row deep groove spherical rolling element tracks in the middle of the axial distance of the outer circumference, the middle of the axial distance of the inner circumference of the reducing middle ring is provided with one circle of deep groove spherical rolling element tracks, the deep groove spherical rolling element tracks are arranged between the two circles of tracks of the double-row deep groove spherical rolling element tracks on the outer circumference of the relative middle ring to form the reducing middle ring, the spherical rolling elements are respectively arranged in the deep groove spherical rolling element tracks on the inner circumference and the outer circumference of the reducing middle ring, two rows of cylindrical roller tracks are respectively arranged at the intervals of the two ends of the double-row deep groove spherical rolling element tracks on the middle part of the outer circumference of the reducing middle ring correspondingly, cylindrical rollers are respectively arranged in the cylindrical roller tracks, one row of cylindrical roller tracks are respectively arranged at the intervals of the two ends of the circle of spherical rolling element tracks on the middle,

the two double-half outer rings are respectively arranged at two sides of the outer ring of the double-row deep groove ball bearing, the inner circumferences of the two double-half outer rings are respectively provided with a circle of cylindrical roller track, the outer ends of the two double-half outer ring cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,

the two double-half inner ferrules are coaxially arranged on two sides of a deep groove ball rolling body track in the middle of the inner circumference of the reducing middle ring, cylindrical roller tracks are respectively arranged in the middle of the outer circumferences of the two double-half inner ferrules, cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the cylindrical roller tracks, cylindrical roller inner retaining shoulders are respectively arranged at the inner ends of the cylindrical roller tracks, three-point contact ball rolling body tracks are respectively arranged on the outer circumferences of the ends of the cylindrical roller inner retaining shoulders, the three-point contact ball rolling body tracks arranged at the outer circumferential ends of the two double-half inner ferrule cylindrical roller tracks are respectively corresponding to a circle of deep groove ball rolling body track arranged in the middle of the inner circumference of the reducing middle ring, and the ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies.