阅读说明：本技术 一种设置交叉滚子中置球的重载荷高铁轴承 (Heavy-load high-speed rail bearing provided with crossed rollers and balls arranged in crossed rollers ) 是由 孟萍 于 2019-04-17 设计创作，主要内容包括：本发明涉及重载荷高铁轴承。提出了一种设置交叉滚子中置球的重载荷高铁轴承,包括一个外套圈、两个双半内套圈、一排交叉球面滚子和两排圆柱滚子：在外套圈内圆周轴向距离的中部设有一圈十字交叉椭圆球面滚子轨道,在该椭圆球面滚子轨道内交叉设置球面滚子,在该交叉椭圆球面滚子轨道的两端间隔距离各设置一圈圆柱滚子轨道,在圆柱滚子轨道内各设置圆柱滚子,双半内套圈外圆周的中部各设有一圈圆柱滚子轨道,在轨道内各设置圆柱滚子,在该圆柱滚子轨道内端外圆周的端头各设置交叉椭圆球面滚子轨道,该交叉椭圆球面滚子轨道分别与外套圈内圆周中部设置的十字交叉球面滚子组合,形成交叉球面滚子中置球的重载荷高铁轴承,本发明将交叉滚子轴承与圆柱滚子的优势互补组合,使轴承具备高精度、高刚度、高承载力、低摩擦长寿命的效果。(The invention relates to a heavy-load high-speed rail bearing. The heavy-load high-speed rail bearing with the crossed roller middle ball comprises an outer ring, two double-half inner rings, a row of crossed spherical rollers and two rows of cylindrical rollers, wherein the two rows of crossed spherical rollers are arranged on the outer ring: the invention is characterized in that a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the inner circumference of an outer ferrule, spherical rollers are arranged in the elliptical spherical roller track in a crossed manner, a circle of cylindrical roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks, a circle of cylindrical roller track is respectively arranged in the middle of the outer circumferences of two semi-inner ferrules, cylindrical rollers are respectively arranged in the tracks, crossed elliptical spherical roller tracks are respectively arranged at the ends of the outer circumferences of the inner ends of the cylindrical roller tracks, and the crossed elliptical spherical roller tracks are respectively combined with the crossed spherical rollers arranged in the middle of the inner circumference of the outer ferrule to form a heavy-load high-speed rail bearing with balls in crossed spherical rollers Low friction and long service life.)

1. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put spherical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the inner circumference of the outer race, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of cylindrical roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the double-half inner ring is respectively provided with a circle of cylindrical roller track in the middle of the outer circumference of the two double-half inner ring rings, the outer end of the cylindrical roller track is respectively provided with a cylindrical roller outer retaining shoulder, the inner end of the cylindrical roller track is respectively provided with a cylindrical roller inner retaining shoulder, the end heads of the outer circumferences of the inner ends of the two double-half inner ring rings are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ring rings are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the inner circumference of the outer ring and cylindrical rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end head of the outer circumference of the inner end and the cylindrical roller track arranged in the middle of the outer circumference of the outer ring.

2. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of cylindrical roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the double-half outer races are respectively provided with a circle of cylindrical roller track at the middle part of the inner circumference of the double-half outer races, 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 ends of the inner circumferences of the inner ends of the double-half outer races are respectively provided with crossed elliptical spherical roller tracks, and the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track at the middle part of the outer circumference of the inner race and cylindrical rollers arranged at two ends through the crossed elliptical spherical roller tracks arranged at the inner ends of the inner circumferences and the cylindrical roller tracks arranged at the middle part of the outer circumference of the inner race to form a heavy-load high-.

3. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer race, two half inner race, put spherical roller and two rings of ring roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the inner circumference of the outer ring, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of circular roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, circular rollers are respectively arranged in the circular roller tracks,

the outer sections of the outer circumferences of the two double-half inner ferrules are respectively provided with a circle of circular ring roller track, the ends of the outer circumferences of the inner ends of the two double-half inner ferrules are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ferrules are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the inner circumference of the outer ferrule and circular ring rollers arranged at two ends of the outer circumference through the crossed elliptical spherical roller track arranged at the end of the outer circumference of the inner end and the circular ring roller track arranged at the outer circumference, and the heavy-load high-speed rail bearing with the spherical rollers arranged in the crossed elliptical spherical roller track is formed.

4. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of ring roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of circular roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, circular rollers are respectively arranged in the circular roller tracks,

the outer sections of the inner circumferences of the two double-half outer races are respectively provided with a circle of circular ring roller track, the ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with a crossed elliptical spherical roller track, the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the outer circumference of the inner race and circular ring rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end of the inner circumference of the inner end and the circular ring roller track arranged at the outer section of the inner circumference, and a heavy-load high-speed rail bearing with the spherical rollers arranged in the crossed elliptical spherical roller track is formed.

5. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer race, two half inner race, put spherical roller and two rings of spherical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller tracks are arranged in the middle of the inner circumference of the outer race, a middle spherical roller is arranged in the crossed spherical roller tracks in a crossed manner, a circle of spherical roller tracks are respectively arranged at the two ends of the crossed spherical roller tracks at intervals, the spherical roller tracks and the vertical axis of the bearing form an angle of 1-20 degrees, spherical rollers are respectively arranged in the spherical roller tracks,

the middle parts of the outer circumferences of the two double-half inner ferrules are respectively provided with a circle of reverse spherical roller track, the curvature radius of the reverse spherical roller track is larger than the radius of the circumferential track of the bearing roller, and the outer ends of the reverse spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, after the two double-half inner ferrules are coaxially combined, the axial sections of the reverse spherical roller tracks respectively arranged at the middle parts of the outer circumferences of the two tracks are in a reverse spherical roller track structure, the end heads of the outer circumferences of the inner ends of the two double-half inner ferrules are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ferrules are respectively combined with a middle spherical roller arranged in a crossed elliptical spherical roller track in the middle of the inner circumference of the outer ferrule and spherical rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end heads of the outer circumferences of the inner ends and a reverse spherical roller track arranged in the middle of the outer circumference, so that the heavy-load high-speed rail bearing with the spherical rollers arranged in the middle of the crossed elliptical spherical roller track is formed.

6. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of spherical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller tracks are arranged in the middle of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller tracks in a crossed manner, a circle of spherical roller tracks are respectively arranged at the two ends of the crossed elliptical spherical roller tracks at intervals, the spherical roller tracks and the vertical axis of the bearing form an angle of 1-20 degrees, spherical rollers are respectively arranged in the spherical roller tracks,

the outer sections of the inner circumferences of the two double-half outer races are respectively provided with a circle of elliptical spherical roller track, the curvature radius of the elliptical spherical roller track is larger than the radius of the bearing roller circumferential track, after the two double-half outer races are combined with the same axle center, the axial sections of the elliptical spherical roller tracks respectively arranged on the inner circumference outer sections are in an elliptical structure, the ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with crossed elliptical spherical roller tracks, the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track arranged in the middle of the outer circumference of the inner race and a spherical roller arranged at two ends through the crossed elliptical spherical roller track arranged on the inner circumference inner end and the elliptical spherical roller track arranged on the inner circumference outer section, and the heavy-load high-iron bearing with the spherical roller arranged in the.

7. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put cylindrical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed cylindrical roller tracks are arranged in the middle of the inner circumference of the outer ring, centrally-mounted cylindrical rollers are arranged in the crossed cylindrical roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed cylindrical roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the middle parts of the outer circumferences of the two double-half inner ring rings are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks of the two double-half inner ring rings 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 ends of the outer circumferences of the inner ends of the two double-half inner ring rings are respectively provided with a cross-shaped cylindrical roller track, the two double-half inner ring rings are respectively combined with a middle cylindrical roller arranged in the cross-shaped cylindrical roller track at the middle part of the inner circumference of the outer ring and cylindrical rollers arranged at two ends of the outer circumference of the outer ring through the cross-shaped cylindrical roller track arranged at the outer circumferential end of the inner end and the cylindrical roller track arranged at the middle.

8. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put cylindrical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed cylindrical roller tracks are arranged in the middle of the outer circumference of the inner ferrule, a middle cylindrical roller is arranged in the crossed cylindrical roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed cylindrical roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the bearing is characterized in that the middle parts of the inner circumferences of the two double-half outer races are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks of the inner circumferences of the two double-half outer races 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 ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with a crossed cylindrical roller track, the two double-half outer races are respectively combined with a middle cylindrical roller arranged in the crossed cylindrical roller track at the middle part of the outer circumference of the inner race and cylindrical rollers arranged at two ends of the crossed cylindrical roller track, and a heavy-load high-speed rail bearing with the cylindrical rollers in the crossed cylindrical roller tracks is formed.

9. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put tapered roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed tapered roller tracks are arranged in the middle of the inner circumference of the outer ring, a middle tapered roller is arranged in the crossed tapered roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed tapered roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the heavy-load high-speed railway bearing is characterized in that the middle parts of 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 of the two double-half outer rings 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 ends of the outer circumferences of the inner ends of the two double-half inner rings are respectively provided with a crossed tapered roller track, the two double-half inner rings are respectively combined with a middle tapered roller arranged in the crossed tapered roller track in the middle of the inner circumference of the outer ring and cylindrical rollers arranged at two ends of the outer circumference of the outer ring through the crossed tapered roller track arranged at the outer circumferential end of the inner end and the cylindrical roller track arranged in.

10. A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, a circle of middle-placed tapered roller and two circles of cylindrical rollers: the method is characterized in that: a circle of crossed tapered roller tracks are arranged in the middle of the outer circumference of the inner ferrule, tapered rollers are arranged in the crossed tapered roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed tapered roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the heavy-load high-speed railway bearing is characterized in that the middle parts of the inner circumferences of the two double-half outer races are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks of the two double-half outer races 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 ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with a crossed tapered roller track, the two double-half outer races are respectively combined with a middle tapered roller arranged in the crossed tapered roller track at the middle part of the outer circumference of the inner race and cylindrical rollers arranged at two ends of the cross tapered roller track at the middle part of the outer circumference of the inner race through the crossed tapered roller track at the inner ends, and.

Technical Field

The invention relates to a high-speed rail bearing.

Background

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

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

(2) the roller is easily skewed: the biggest inherent fatal defect of the tapered roller bearing is roller deflection caused by uneven stress of a roller contact line in rotation of complex moment, when the roller deflects, the contact surface of the roller is not in line contact with a raceway any more, but is tightly clamped between an inner raceway and an outer raceway like a wedge at a certain angle, the indentation, the peeling, the retainer cracking or the flange cracking of the raceway of the ferrule are directly caused, the defect of the inherent mechanical structure of the roller cannot be corrected by adopting a method for increasing the roller convexity and the mechanical essence of the stress concentration of the roller end can not be changed,

(3) hazards caused by tapered roller contact angles:

a: because: the friction resistance of the tapered roller bearing is increased along with the increase of the roller contact angle, so the starting friction resistance can be increased by 4-8 times along with the increase of the roller contact angle, and the sliding friction during starting can be directly caused, because: the mechanical principle of the combined load of the tapered roller bearing is realized by the size of a roller contact angle, namely: the tapered roller directly distributes the load received by the tapered roller in the radial direction and the axial direction of the bearing according to the size of the contact angle, so that: the cone bearing directly derives constant axial force and causes inherent serious defects, the axial force caused by a contact angle is the same as the principle of a lateral adjusting nozzle of a rocket jet engine, and when the rocket does not need the lateral jet adjusting direction, lateral jet is always carried out, which is how harmful, and the high-speed rail bearing is the same principle, for example: when the high-speed rail runs linearly for a long time without large axial load, the tapered roller still derives constant axial force according to the roller contact angle, and the generated friction resistance and friction heating are always forced on the bearing, which is unreasonable, and the friction resistance and friction heating of the bearing are directly increased meaninglessly, and the roller is promoted to generate skew sliding and other hazards.

B: the sliding friction of bearing gravity between the end face of the large end of the tapered roller and the flange of the ferrule is an uncorrectable congenital defect, and the SKF data shows that: because the loads acting on the flanges cannot be evenly distributed, the abrasion is increased and even the flanges are likely to break (SKF bearing comprehensive type record P506 page), the larger the roller contact angle is, the larger the friction resistance borne by the flanges is, the more the roller contact angle is, the more the grease lubrication difficulty and the high-speed performance are increased, the bearing deflection, the bearing heating and the edge breakage are easily caused, and a plurality of potential safety hazards in the high-speed rotation of the bearing can be directly caused,

disclosure of Invention

In view of the technical defects of the double-section tapered roller high-speed rail bearing, the invention provides a heavy-load high-speed rail bearing with a crossed roller, which is complementary with the advantages of the double-section cylindrical roller, the double-section circular roller and the double-section spherical roller by utilizing the mechanical properties of high bearing capacity, high precision and high rigidity of the crossed roller bearing and utilizing the characteristics of large friction of the circular roller, the spherical roller and the cylindrical roller and the self-aligning function of the circular roller and the spherical roller and the characteristic of uniformly distributing pressure on all positions of the rollers under any torque working condition, so that the bearing has the effects of high precision, high rigidity, high bearing capacity and long service life, and the technical scheme adopted for realizing the purposes is as follows:

a heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put spherical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the inner circumference of the outer race, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of cylindrical roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the double-half inner ring is respectively provided with a circle of cylindrical roller track in the middle of the outer circumference of the two double-half inner ring rings, the outer end of the cylindrical roller track is respectively provided with a cylindrical roller outer retaining shoulder, the inner end of the cylindrical roller track is respectively provided with a cylindrical roller inner retaining shoulder, the end heads of the outer circumferences of the inner ends of the two double-half inner ring rings are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ring rings are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the inner circumference of the outer ring and cylindrical rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end head of the outer circumference of the inner end and the cylindrical roller track arranged in the middle of the outer circumference of the outer ring.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of cylindrical roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the double-half outer races are respectively provided with a circle of cylindrical roller track at the middle part of the inner circumference of the double-half outer races, 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 ends of the inner circumferences of the inner ends of the double-half outer races are respectively provided with crossed elliptical spherical roller tracks, and the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track at the middle part of the outer circumference of the inner race and cylindrical rollers arranged at two ends through the crossed elliptical spherical roller tracks arranged at the inner ends of the inner circumferences and the cylindrical roller tracks arranged at the middle part of the outer circumference of the inner race to form a heavy-load high-.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer race, two half inner race, put spherical roller and two rings of ring roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the inner circumference of the outer ring, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of circular roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, circular rollers are respectively arranged in the circular roller tracks,

the outer sections of the outer circumferences of the two double-half inner ferrules are respectively provided with a circle of circular ring roller track, the ends of the outer circumferences of the inner ends of the two double-half inner ferrules are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ferrules are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the inner circumference of the outer ferrule and circular ring rollers arranged at two ends of the outer circumference through the crossed elliptical spherical roller track arranged at the end of the outer circumference of the inner end and the circular ring roller track arranged at the outer circumference, and the heavy-load high-speed rail bearing with the spherical rollers arranged in the crossed elliptical spherical roller track is formed.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of ring roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller track in a crossed manner, a circle of circular roller track is respectively arranged at the two ends of the crossed elliptical spherical roller track at intervals, circular rollers are respectively arranged in the circular roller tracks,

the outer sections of the inner circumferences of the two double-half outer races are respectively provided with a circle of circular ring roller track, the ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with a crossed elliptical spherical roller track, the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track in the middle of the outer circumference of the inner race and circular ring rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end of the inner circumference of the inner end and the circular ring roller track arranged at the outer section of the inner circumference, and a heavy-load high-speed rail bearing with the spherical rollers arranged in the crossed elliptical spherical roller track is formed.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer race, two half inner race, put spherical roller and two rings of spherical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller tracks are arranged in the middle of the inner circumference of the outer race, a middle spherical roller is arranged in the crossed spherical roller tracks in a crossed manner, a circle of spherical roller tracks are respectively arranged at the two ends of the crossed spherical roller tracks at intervals, the spherical roller tracks and the vertical axis of the bearing form an angle of 1-20 degrees, spherical rollers are respectively arranged in the spherical roller tracks,

the middle parts of the outer circumferences of the two double-half inner ferrules are respectively provided with a circle of reverse spherical roller track, the curvature radius of the reverse spherical roller track is larger than the radius of the circumferential track of the bearing roller, and the outer ends of the reverse spherical roller tracks are respectively provided with a spherical roller outer retaining shoulder, after the two double-half inner ferrules are coaxially combined, the axial sections of the reverse spherical roller tracks respectively arranged at the middle parts of the outer circumferences of the two tracks are in a reverse spherical roller track structure, the end heads of the outer circumferences of the inner ends of the two double-half inner ferrules are respectively provided with a crossed elliptical spherical roller track, the two double-half inner ferrules are respectively combined with a middle spherical roller arranged in a crossed elliptical spherical roller track in the middle of the inner circumference of the outer ferrule and spherical rollers arranged at two ends through the crossed elliptical spherical roller track arranged at the end heads of the outer circumferences of the inner ends and a reverse spherical roller track arranged in the middle of the outer circumference, so that the heavy-load high-speed rail bearing with the spherical rollers arranged in the middle of the crossed elliptical spherical roller track is formed.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put spherical roller and two rings of spherical roller in the round: the method is characterized in that: a circle of crossed elliptical spherical roller tracks are arranged in the middle of the outer circumference of the inner ferrule, a middle spherical roller is arranged in the crossed elliptical spherical roller tracks in a crossed manner, a circle of spherical roller tracks are respectively arranged at the two ends of the crossed elliptical spherical roller tracks at intervals, the spherical roller tracks and the vertical axis of the bearing form an angle of 1-20 degrees, spherical rollers are respectively arranged in the spherical roller tracks,

the outer sections of the inner circumferences of the two double-half outer races are respectively provided with a circle of elliptical spherical roller track, the curvature radius of the elliptical spherical roller track is larger than the radius of the bearing roller circumferential track, after the two double-half outer races are combined with the same axle center, the axial sections of the elliptical spherical roller tracks respectively arranged on the inner circumference outer sections are in an elliptical structure, the ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with crossed elliptical spherical roller tracks, the two double-half outer races are respectively combined with a middle spherical roller arranged in the crossed elliptical spherical roller track arranged in the middle of the outer circumference of the inner race and a spherical roller arranged at two ends through the crossed elliptical spherical roller track arranged on the inner circumference inner end and the elliptical spherical roller track arranged on the inner circumference outer section, and the heavy-load high-iron bearing with the spherical roller arranged in the.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put cylindrical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed cylindrical roller tracks are arranged in the middle of the inner circumference of the outer ring, centrally-mounted cylindrical rollers are arranged in the crossed cylindrical roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed cylindrical roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the middle parts of the outer circumferences of the two double-half inner ring rings are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks of the two double-half inner ring rings 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 ends of the outer circumferences of the inner ends of the two double-half inner ring rings are respectively provided with a cross-shaped cylindrical roller track, the two double-half inner ring rings are respectively combined with a middle cylindrical roller arranged in the cross-shaped cylindrical roller track at the middle part of the inner circumference of the outer ring and cylindrical rollers arranged at two ends of the outer circumference of the outer ring through the cross-shaped cylindrical roller track arranged at the outer circumferential end of the inner end and the cylindrical roller track arranged at the middle.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, put cylindrical roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed cylindrical roller tracks are arranged in the middle of the outer circumference of the inner ferrule, a middle cylindrical roller is arranged in the crossed cylindrical roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed cylindrical roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the middle of the inner circumference of the two double-half outer races is respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks in the inner circumference of the two double-half outer races 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 ends of the inner circumference of the inner ends of the two double-half outer races are respectively provided with a crossed cylindrical roller track, the two double-half outer races are respectively combined by the crossed cylindrical roller track arranged at the inner end of the inner circumference and a cylindrical roller arranged at the middle of the crossed cylindrical roller track arranged at the middle of the inner circumference, and a heavy-load high-speed iron bearing with the cylindrical roller arranged in the crossed cylindrical roller track is formed.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an outer ring, two half inner ring, put tapered roller and two rings of cylindrical roller in the round: the method is characterized in that: a circle of crossed tapered roller tracks are arranged in the middle of the inner circumference of the outer ring, a middle tapered roller is arranged in the crossed tapered roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed tapered roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the heavy-load high-speed railway bearing is characterized in that the middle parts of 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 of the two double-half outer rings 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 ends of the outer circumferences of the inner ends of the two double-half inner rings are respectively provided with a crossed tapered roller track, the two double-half inner rings are respectively combined with a middle tapered roller arranged in the crossed tapered roller track in the middle of the inner circumference of the outer ring and cylindrical rollers arranged at two ends of the outer circumference of the outer ring through the crossed tapered roller track arranged at the outer circumferential end of the inner end and the cylindrical roller track arranged in.

A heavy-duty high-speed rail bearing with cross roller center balls, comprising: an inner race, two half outer races, a circle of middle-placed tapered roller and two circles of cylindrical rollers: the method is characterized in that: a circle of crossed tapered roller tracks are arranged in the middle of the outer circumference of the inner ferrule, tapered rollers are arranged in the crossed tapered roller tracks in a crossed manner, a circle of cylindrical roller tracks are respectively arranged at the two ends of the crossed tapered roller tracks at intervals, cylindrical rollers are respectively arranged in the cylindrical roller tracks,

the heavy-load high-speed railway bearing is characterized in that the middle parts of the inner circumferences of the two double-half outer races are respectively provided with a circle of cylindrical roller track, the outer ends of the cylindrical roller tracks of the two double-half outer races 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 ends of the inner circumferences of the inner ends of the two double-half outer races are respectively provided with a crossed tapered roller track, the two double-half outer races are respectively combined with a middle tapered roller arranged in the crossed tapered roller track at the middle part of the outer circumference of the inner race and cylindrical rollers arranged at two ends of the cross tapered roller track at the middle part of the outer circumference of the inner race through the crossed tapered roller track at the inner ends, and.

The invention has the beneficial effects that: the crossed roller bearing is arranged among the double-section cylindrical rollers, the double-section annular rollers and the double-section spherical rollers to form advantage complementation, so that the bearing achieves the effects of high speed, heavy load and long service life.

Drawings

FIG. 1 is a cross-sectional view of a cylindrical roller heavy-load high-speed rail bearing with crossed spherical rollers and balls in the middle of the inner circumference of an outer race.

FIG. 2 is a cross-sectional view of the cylindrical roller heavy-load high-speed rail bearing with crossed spherical rollers and balls in the middle of the outer circumference of the inner ring.

FIG. 3 is a cross-sectional view of the heavy-duty high-speed rail bearing with the toroidal roller having crossed spherical rollers and balls placed in the middle of the inner circumference of the outer race according to the present invention.

FIG. 4 is a cross-sectional view of the toroidal roller heavy load high-speed rail bearing with crossed spherical roller centering balls arranged in the middle of the outer circumference of the inner race according to the present invention.

FIG. 5 is a cross-sectional view of a heavy-duty high-speed rail bearing with inverted spherical roller tracks, in which balls are placed in crossed spherical rollers at the middle of the inner circumference of an outer race, according to the present invention.

FIG. 6 is a cross-sectional view of the heavy-duty high-speed rail bearing with elliptical spherical roller tracks, wherein crossed spherical rollers and centering balls are arranged in the middle of the outer circumference of the inner race.

FIG. 7 is a cross-sectional view of a cylindrical roller heavy-load high-speed rail bearing with crossed cylindrical roller centering balls arranged in the middle of the inner circumference of an outer race according to the present invention.

FIG. 8 is a cross-sectional view of a cylindrical roller heavy-load high-speed rail bearing with crossed cylindrical roller centering balls arranged in the middle of the outer circumference of an inner race according to the present invention.

FIG. 9 is a cross-sectional view of a cylindrical roller heavy-load high-speed rail bearing with crossed tapered roller center balls arranged in the middle of the inner circumference of an outer race according to the present invention.

FIG. 10 is a cross-sectional view of the cylindrical roller heavy-load high-speed rail bearing with crossed tapered roller built-in balls arranged in the middle of the outer circumference of the inner ring.

In the figure: 1. the spherical roller track comprises an outer race, 2, an inner race, 3, double-half inner races, 4, double-half outer races, 5, a crossed elliptical spherical roller track, 6, a middle spherical roller, 7, a crossed cylindrical roller track, 8, a middle cylindrical roller, 9, a crossed tapered roller track, 10, a middle tapered roller, 11, a cylindrical roller track, 12, a cylindrical roller, 13, a cylindrical roller outer blocking shoulder, 14, a cylindrical roller inner blocking shoulder, 15, a circular roller track, 16, a circular roller, 17, a spherical roller track, 17-1, a reverse spherical roller track, 18, a spherical roller, 19, a spherical roller outer blocking shoulder, 20 and an elliptical spherical roller track.

Detailed Description

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.