CN110966307A - Novel high-speed heavy-load high-speed railway bearing - Google Patents
Novel high-speed heavy-load high-speed railway bearing Download PDFInfo
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- CN110966307A CN110966307A CN201811137133.8A CN201811137133A CN110966307A CN 110966307 A CN110966307 A CN 110966307A CN 201811137133 A CN201811137133 A CN 201811137133A CN 110966307 A CN110966307 A CN 110966307A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention relates to a bearing, in particular to a high-speed heavy-load high-speed rail bearing with a middle ball, which comprises an outer ring with the middle ball, a deep groove ball bearing inner ring, two double-half inner rings and three rows of rolling bodies, wherein the middle part of the inner circumference of the outer ring is provided with a deep groove ball bearing rolling body track, two ends of the deep groove ball bearing rolling body track are respectively provided with a circular ring roller track at intervals, circular ring rollers are respectively arranged in the tracks, a deep groove ball bearing structure is arranged in the middle part of the inner circumference of the outer ring and is arranged between a double-section circular ring roller and a cylindrical roller, the mechanical structure of the middle ball is designed by fully utilizing the advantages of pure rolling friction of two-point contact of the ball rolling bodies, high rotating speed and capability of bearing bidirectional combined load, the scheme that the double-section conical roller bearing bears axial force by utilizing an enlarged roller contact angle is replaced, the high-speed heavy-load high-speed rail bearing with the middle ball bearing can effectively, the rotational speed and the rotational accuracy of the bearing are improved because: skf bearing data confirm: the special annular arc surface of the circular roller can enable the load born by the roller to be uniformly distributed on the contact surface of the roller and the raceway, so that: the middle ball is arranged between the double rows of ring rollers, so that the radial bearing capacity of the bearing can be greatly improved, and low friction, low temperature rise and long service life are realized.
Description
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 tapered roller bearing manufactured by means of advanced bearing materials and process technologies, and research data show that: the mechanical structure of a tapered roller bearing has a number of fatal defects, such as:
1. stress concentration: stress concentration at the end part of a roller of the tapered roller bearing is an inherent fatal defect which cannot be radically treated, and the common main harm is that indentation and peeling of a raceway are caused;
2. the roller is easily skewed: the biggest inherent fatal defect of the tapered roller bearing is that the roller is easy to incline due to uneven stress of a roller contact line in rotation, and the mechanical concept of the roller inclination is as follows: when a roller is skewed, the rolling surface of the roller is not in line contact with the roller path any longer, 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 a rolling element, and severe abrasion of the other end of the rolling element directly causes indentation, peeling, retainer cracking or flange cracking of the roller path of the ring, which often occurs in a wheel axle bearing of a heavy-duty automobile, currently, developed countries adopt a method for increasing the roller convexity to reduce 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 contact of middle sphere in utility model ZL201621332292, X "a novel high-speed heavy-duty car wheel shaft bearing" before oneself has replaced tapered roller and has utilized the angle of inclination to bear the design scheme of two-way axial load, and the effectual friction that has reduced tapered roller is wiped 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 introduces the technology to the high-speed rail bearing, carries out deep technical innovation,
disclosure of Invention
In view of the requirement of continuously increasing the speed of the high-speed rail and the defects of the prior art, further intensive research is carried out on the basis of the prior utility model technology, and a novel high-speed heavy-load high-speed rail bearing is provided, wherein the middle ball arranged in the middle of the inner circumference of the outer ring or the outer circumference of the inner ring adopts mechanical structures such as a double-row deep groove ball bearing (the friction coefficient is 0, 0010 plus 0012), a double-row angular contact ball bearing, a deep groove ball bearing and the like, so that a 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 friction and the heat of the bearing are greatly reduced, the radial bearing capacity and the combined load bearing capacity of the middle ball are greatly improved, and a roller bearing the radial force is adopted on, 0008- -0010) and ring rollers (coefficient of friction 0, 0010-: 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: a novel high-speed heavy-load high-speed railway bearing comprises: the device comprises an outer ring, two double-half inner rings, a deep groove ball bearing inner ring and three rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the inner circumference of the outer ring is provided with a circle of deep groove spherical rolling body tracks, spherical rolling bodies are arranged in the tracks, two rows of circular roller tracks are respectively arranged at the two ends of the deep groove spherical rolling body tracks at intervals correspondingly, circular rollers are arranged in the tracks,
the inner ring of the deep groove ball bearing is arranged between the two double-half inner rings and corresponds to a circle of deep groove ball rolling body track arranged in the middle of the inner circumference of the outer ring, a central ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies,
the two double-half inner ring bodies are coaxially arranged on two sides of the inner ring of the deep groove ball bearing respectively, and a circle of circular roller track is arranged on the outer circumference of each of the two double-half inner ring bodies.
A novel high-speed heavy-load high-speed railway bearing comprises: the device comprises an outer ring, two double-half inner rings, a deep groove ball bearing inner ring and three rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the inner circumference of the outer ring is provided with a circle of deep groove spherical rolling body tracks, spherical rolling bodies are arranged in the tracks, two rows of cylindrical roller tracks are respectively arranged at the two ends of the deep groove spherical rolling body tracks at intervals correspondingly, cylindrical rollers are arranged in the tracks,
the inner ring of the deep groove ball bearing is arranged between the two double-half inner rings and corresponds to a circle of deep groove ball rolling body track arranged in the middle of the inner circumference of the outer ring, a central ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies,
the two double-half inner ring coaxial centers are respectively arranged at two sides of the deep groove ball bearing inner ring, the outer circumferences of the two double-half inner ring are respectively provided with a cylindrical roller track, and the outer ends of the two double-half inner ring cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder.
A novel high-speed heavy-load high-speed railway bearing comprises: the spherical roller bearing comprises an outer ring, two double-half inner rings and two rows of spherical rollers; the method is characterized in that: the outer ring is provided with a row of spherical roller tracks at intervals corresponding to the two sides of the inner circumferential shaft, spherical rollers are respectively arranged in the spherical roller tracks,
the two double-half inner ferrules are coaxially arranged on two sides of two rows of spherical roller tracks arranged on the inner circumference of the outer ferrule respectively, the outer circumferences of the two double-half inner ferrules are respectively provided with double-half inner ferrule reverse spherical roller tracks, the two double-half inner ferrules are coaxially combined into a whole, the double-half inner ferrule reverse spherical roller tracks arranged on the outer circumferences of the two double-half inner ferrules respectively are combined to form a complete reverse spherical roller track, the reverse spherical roller tracks correspond to the two rows of spherical roller tracks arranged on two sides of the inner circumference of the outer ferrule respectively, and the reverse spherical roller bearing structure is formed by combining the two rows of spherical rollers.
A novel high-speed heavy-load high-speed railway bearing comprises: the deep groove ball bearing comprises an inner ring, two double-half outer rings, a deep groove ball bearing outer ring and three rows of rolling bodies; the method is characterized in that: a circle of deep groove spherical rolling body track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, spherical rolling bodies are arranged in the track, a row of cylindrical roller tracks are respectively arranged at the two ends of the spherical rolling body track at intervals corresponding to the distance, cylindrical rollers are respectively arranged in the tracks,
the deep groove ball outer ring is arranged between the two double-half outer rings and corresponds to a circle of deep groove ball rolling body track arranged in the middle of the outer circumference of the inner ring, a central ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies,
the two double-half outer rings are coaxially arranged on two sides of the outer ring of the deep groove ball bearing respectively, a circle of cylindrical roller track is arranged on each of the inner circumferences of the two double-half outer rings, and the outer ends of the cylindrical roller tracks of the two double-half outer rings are provided with cylindrical roller outer retaining shoulders.
A novel high-speed heavy-load high-speed railway bearing comprises: the deep groove ball bearing comprises an inner ring, two double-half outer rings, a deep groove ball bearing outer ring and three rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule is provided with a circle of deep groove spherical rolling body tracks, spherical rolling bodies are arranged in the tracks, two rows of circular roller tracks are respectively arranged at the two ends of the spherical rolling body tracks at intervals corresponding to the distance, circular rollers are arranged in the tracks,
the deep groove ball outer ring is arranged between the two double-half outer rings and corresponds to a circle of deep groove ball rolling body track arranged in the middle of the outer circumference of the inner ring, a central ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies,
the two double-half outer rings are coaxially arranged on two sides of the outer ring of the deep groove ball bearing respectively, and a circle of circular roller track is arranged on each of the inner circumferences of the two double-half outer rings.
A novel high-speed heavy-load high-speed railway bearing comprises: an inner ring, two double-half outer rings and three rows of rolling bodies; the method is characterized in that: a circle of deep groove spherical rolling body track is arranged in the middle of the axial distance of the outer circumference of the inner ferrule, spherical rolling bodies are arranged in the track, a row of cylindrical roller tracks are respectively arranged at the two ends of the spherical rolling body track at intervals corresponding to the distance, cylindrical rollers are respectively arranged in the tracks,
the two double-half outer rings are coaxially arranged at two sides of a deep groove spherical rolling body track arranged in the middle of the outer circumference of the inner ring, the middle parts of 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 inner ends of the cylindrical roller tracks are respectively provided with a cylindrical roller inner retaining shoulder, the inner circumference of the end head of the cylindrical roller inner retaining shoulder is respectively provided with a three-point contact spherical rolling body track, the two double-half outer rings are respectively arranged at two sides of a deep groove spherical rolling body track arranged in the middle of the outer circumference of the inner ring, three-point contact spherical rolling body tracks arranged at the ends of the inner blocking shoulders of the two double-half outer ring cylindrical rollers respectively correspond to a circle of deep groove ball rolling body track arranged at the middle part of the outer circumference of the inner ring, and a middle ball structure of the three-point contact ball bearing is formed by combining the spherical rolling bodies.
A novel high-speed heavy-load high-speed railway bearing comprises: two double-half outer rings, one inner ring and four rows of rolling bodies; the method is characterized in that: two circles of double-row angular contact spherical rolling element tracks are arranged in the middle of the axial distance of the outer circumference of the inner ferrule, spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks, a row of cylindrical roller tracks are respectively arranged at the two ends of the two circles of double-row angular contact spherical rolling element tracks with corresponding distance, cylindrical rollers are respectively arranged in the cylindrical roller tracks,
the two double-half outer races are coaxially arranged on two sides of two circles of angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the inner race respectively, a circle of cylindrical roller track is arranged on the outer sides of the inner circumferences of the two double-half outer races respectively, cylindrical roller outer retaining shoulders are arranged on the outer ends of the cylindrical roller tracks respectively, cylindrical roller inner retaining shoulders are arranged on the inner ends of the cylindrical roller tracks respectively, a circle of angular contact spherical rolling element track is arranged on the inner circumferences of the cylindrical roller inner retaining shoulders respectively, the angular contact spherical rolling element tracks arranged on the two double-half outer races cylindrical roller inner retaining shoulders correspond to the two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the inner race respectively, and the middle ball structure of the double-row angular contact ball.
A novel high-speed heavy-load high-speed railway bearing comprises: the rolling mechanism comprises an outer ring, two double-half inner rings and four rows of rolling bodies; the method is characterized in that: two circles of double-row angular contact spherical rolling element tracks are arranged in the middle of the axial distance of the inner circumference of the outer ring, spherical rolling elements are respectively arranged in the tracks, a row of cylindrical roller tracks are respectively arranged at the two ends of the two circles of angular contact spherical rolling element tracks with corresponding distance, 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 arranged in the middle of the inner circumference of the outer ferrule respectively, a circle of cylindrical roller track is arranged on the outer sides 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, angular contact spherical rolling element tracks are arranged on the outer circumferences of the inner retaining shoulders of the cylindrical rollers respectively, the angular contact spherical rolling element tracks arranged on the inner retaining shoulders of the two double-half inner ferrules correspond to the two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the inner circumference of the outer ferrule respectively, and the double-row angular contact ball bearing is formed by.
A novel high-speed heavy-load high-speed railway bearing comprises: the double-row angular contact ball bearing comprises two double-half outer rings, two double-half inner rings, a double-row angular contact ball bearing inner ring and four rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule of the double-row angular contact ball bearing is provided with two circles of double-row angular contact spherical rolling element tracks, spherical rolling elements are respectively arranged in the tracks,
the two double-half inner ring is coaxially arranged at two sides of the inner ring of the double-row angular contact ball bearing respectively, the outer circumferences of the two double-half inner ring are respectively provided with a circular roller track,
the two double-half outer rings are coaxially arranged on the two double-half inner rings respectively, the two double-half inner rings are coaxially arranged on two sides of a spherical rolling element track in the middle of the inner ring of the double-row angular contact ball bearing respectively, a circle of circular ring roller track is arranged on the outer sides of the inner circumferences of the two double-half outer rings respectively, circular ring rollers are arranged in the circular ring roller tracks, angular contact ball rolling element tracks are arranged on the inner sides of the inner circumferences of the two double-half outer rings respectively and correspond to two circles of angular contact ball rolling element tracks arranged in the middle of the inner ring of the double-row angular contact ball bearing respectively, and the two rows of spherical rolling elements are combined to form a central ball structure of the double-.
A novel high-speed heavy-load high-speed railway bearing comprises: an inner sleeve ring, a double-row deep groove ball bearing outer sleeve ring, two double-half outer sleeve rings and four rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule is provided with two circles of double-row deep groove spherical rolling element tracks, spherical rolling elements are respectively arranged in the double-row deep groove spherical rolling element tracks, two rows of cylindrical roller tracks are respectively arranged at intervals corresponding to the two ends of the two circles of deep groove spherical rolling element tracks, cylindrical rollers are arranged in the tracks, and the outer ends of the cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder,
the outer ring of the double-row deep groove ball bearing is coaxially arranged between the two double-half outer rings and corresponds to two rings of deep groove ball rolling body tracks arranged in the middle of the outer circumference of the inner ring, and a middle ball structure of the double-row deep groove ball bearing is formed by combining two rows of spherical rolling bodies,
the two double-half outer rings are coaxially arranged on two sides of the outer ring of the double-row deep groove ball bearing respectively, a circle of cylindrical roller track is arranged on each of the inner circumferences of the two double-half outer rings, and cylindrical roller outer retaining shoulders are arranged at the outer ends of the two double-half outer ring cylindrical roller tracks.
A novel high-speed heavy-load high-speed railway bearing comprises: the double-row deep groove ball bearing comprises an outer ring, a double-row deep groove ball bearing inner ring, two double-half inner rings and four rows of rolling bodies; the method is characterized in that: two circles of double-row deep groove spherical rolling element tracks are arranged in the middle of the axial distance of the inner circumference of the outer sleeve ring, spherical rolling elements are respectively arranged in the double-row deep groove spherical rolling element tracks, a row of cylindrical roller tracks are respectively arranged at the intervals of the two ends of the two circles of deep groove spherical rolling element tracks, cylindrical rollers are respectively arranged in the cylindrical roller tracks, cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the cylindrical roller tracks of the outer sleeve ring,
the inner ring of the double-row deep groove ball bearing is arranged between the two double-half inner rings and corresponds to two circles of double-row deep groove ball rolling element tracks arranged in the middle of the inner circumference of the outer ring, and a middle ball structure of the double-row deep groove ball bearing is formed by combining two rows of ball rolling elements,
the two double-half inner ring shafts are arranged on two sides of the inner ring of the double-row deep groove ball bearing respectively, a circle of cylindrical roller track is arranged on the outer circumference of each of the two double-half inner ring shafts, and a cylindrical roller outer retaining shoulder is arranged at the outer end of each cylindrical roller track.
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: the current two-section tapered roller bearing popular in the world often has advanced failure caused by roller skew and biting due to a plurality of major defects of unbalanced stress, so that: 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: 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 does not have the faults of roller stress concentration, roller deflection and the like, has the characteristics of low friction, low temperature rise and long service life (taken from SKF comprehensive type recording P776 page),
leading-edge research in developed countries aiming at fatal defects of stress concentration at two ends of a tapered roller high-speed rail bearing roller shows that the phenomenon of stress concentration at two ends of the tapered roller can be improved by increasing the convexity of the tapered roller and modifying the shape of a tapered roller track by adopting the mechanical principle of a spherical roller bearing, and SKF bearing company explains in a comprehensive type record of the bearing: "the spherical roller bearing can bear heavy axial loads acting in two directions besides high radial load bearing capacity" (page p692 of SKF bearing integrated catalog), and the data of the SKF bearing integrated catalog shows: under the condition that the bearing size is the same and the contact angle of the roller is the same, the axial bearing capacity and the radial bearing capacity of the spherical roller bearing are both far larger than those of a tapered roller bearing (SKF bearing integrated record No. 628 page), the invention creates a bearing structure of a reverse spherical roller track (as shown in figure 3) by utilizing the characteristic, because the radius of the reverse spherical roller track is not limited by the diameter of the bearing, the radius of the reverse spherical roller track can be adjusted in a larger range under the condition that the diameter of the bearing is not changed, the combined load ratio is adjusted by utilizing the change of the roller contact angle and the inclination, according to the characteristic that high-speed linear operation is mainly carried out by high-speed iron, the high-iron bearing is designed into the reverse spherical roller track bearing, the contact angle and the inclination of the spherical roller can be greatly reduced, the lower friction, the higher rotating speed, the higher radial load bearing capacity and the enough bidirectional, and the fine tuning center of the bearing can be realized, and: the spherical roller does not need a roller retaining shoulder, directly eliminates the sliding friction between the end part of the roller and the retaining shoulder and various hazards caused by the sliding friction,
SKF is set forth in the bearing general catalog: the spherical roller track and the circular roller track are concave cambered surfaces, the optimized raceway is matched with the roller profile surface, so that the bearing load can be uniformly distributed, and the bearing can be positioned at a position where the load can be uniformly applied to the whole roller no matter whether the inner ring is axially displaced or not relative to the outer ring (SKF bearing comprehensive type 776 page). Namely: the contact stress between the spherical roller, the toroidal roller and the cage can be kept uniform at all times in complicated dynamic loads, and therefore: the reverse spherical roller track bearing can fully develop the technical potential of the spherical roller bearing, has obvious scientific and technological progress significance on the design of high-speed rail bearings,
SKF bearing data confirm: the rotating speed of a deep groove ball bearing of the bearing with the inner diameter 130, the outer diameter 230 and the width 64 is 5600-3600 r/min, and the dynamic load is 165KN and the static load is 150 KN; the rotating speed of the circular ring roller bearing can reach 2800-3800 rpm, the dynamic load thereof is 735KN and the static load thereof is 930 KN: the rotating speed of the spherical roller bearing is 2600-; the rotating speed of the cylindrical roller bearing is 3200-3400 rpm, and the dynamic load of the cylindrical roller bearing is 610KN and the static load of the cylindrical roller bearing is 735 KN; the rotating speed of the tapered roller bearing can only reach 1500-2800 revolutions per minute, and the dynamic load is 550KN and the static load is 830KN (SKF bearing comprehensive type record P314 page), so the novel high-speed rail dynamic bearing has obvious technical progress and can be suitable for higher high-speed rail.
Drawings
Fig. 1 shows a deep groove ball bearing structure with a centrally disposed ball disposed in the middle of the inner circumference of the outer race, and cross-sectional bearing views with ring rollers disposed on both sides of the deep groove ball bearing.
Fig. 2 shows a deep groove ball bearing structure with a centrally disposed ball disposed in the middle of the inner circumference of the outer race, and cross-sectional bearing views with cylindrical rollers disposed on both sides of the deep groove ball bearing.
FIG. 3 is a cross-sectional view of a bearing in which spherical roller tracks are respectively arranged on two sides of the inner circumference of an outer race and reverse spherical roller tracks are respectively arranged on the outer circumferences of two half inner races
Fig. 4 is a bearing cross-sectional view showing that the middle ball arranged in the middle of the outer circumference of the inner race is a deep groove ball bearing structure, and cylindrical rollers are arranged on both sides of the deep groove ball bearing.
Fig. 5 shows a bearing cross-sectional view in which the middle ball disposed in the middle of the outer circumference of the inner race is a deep groove ball bearing structure, and two sides of the deep groove ball bearing are provided with circular rollers.
Fig. 6 is a bearing sectional view showing that the middle ball arranged in the middle of the outer circumference of the inner race is a three-point contact ball bearing structure, and cylindrical rollers are arranged on both sides of the three-point contact ball bearing.
Fig. 7 shows a bearing cross-sectional view in which the middle balls disposed in the middle of the outer circumference of the inner race are of a double-row angular contact ball bearing structure, and cylindrical rollers are disposed on both sides of the double-row angular contact ball bearing.
Fig. 8 shows a bearing cross-sectional view in which the center balls disposed in the middle of the inner circumference of the outer race are of a double-row angular contact ball bearing structure, and cylindrical rollers are disposed on both sides of the double-row angular contact ball bearing.
Fig. 9 shows a bearing cross-sectional view in which the outer circumference of the inner race of the double-row angular contact bearing is provided with a double-row angular contact ball bearing track, two sides of the double-row angular contact ball bearing are provided with ring rollers, and the outer race is a double-half outer race.
Fig. 10 shows a bearing cross-sectional view in which the center ball disposed in the middle of the outer circumference of the inner race is a double-row deep groove ball bearing structure, and cylindrical rollers are disposed on both sides of the double-row deep groove ball bearing.
Fig. 11 shows a bearing cross-sectional view in which the middle ball disposed in the middle of the inner circumference of the outer race is a double-row deep groove ball bearing structure, and cylindrical rollers are disposed on both sides of the double-row deep groove ball bearing.
In the figure: 1 outer ferrule, 2 inner ferrules, 3 deep groove ball bearing inner ferrules, 4 deep groove ball bearing outer ferrules, 5 double-half outer ferrules, 6 double-half inner ferrules, 7 deep groove ball rolling element tracks, 8 double-row deep groove ball rolling element tracks, 9 double-row angular contact ball rolling element tracks, 10 double-row deep groove ball bearing inner ferrules, 11 double-row deep groove ball bearing outer ferrules, 12 circular ring roller tracks, 13 cylindrical roller tracks, and 13-1 inner ferrule cylindrical roller outer retaining shoulders, 13-2 outer ring cylindrical roller outer retaining shoulder, 14 spherical roller track, 15 spherical rolling body, 16 circular roller, 17 cylindrical roller, 18 spherical roller, 19 three-point contact ball rolling body track, 20 cylindrical roller inner retaining shoulder, 21 cylindrical roller outer retaining shoulder, 22 double-half inner ring reverse spherical roller track, 23 reverse spherical roller track, 24 angular contact spherical rolling body track and 25 double-row angular contact ball bearing inner ring.
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,
example 1:
the novel high-speed heavy-load high-speed railway bearing shown in figure 1 comprises: the deep groove ball bearing comprises an outer ring 1, two double-half inner rings 6, a deep groove ball bearing inner ring 3 and three rows of rolling bodies; a circle of deep groove spherical rolling body tracks 7 are arranged in the middle of the axial distance of the inner circumference of the outer ring 1, spherical rolling bodies 15 are arranged in the deep groove spherical rolling body tracks 7, a row of circular roller tracks 12 are respectively arranged at the two ends of the deep groove spherical rolling body tracks 7 at intervals correspondingly, circular rollers 16 are arranged in the tracks,
the inner ring 3 of the deep groove ball bearing is arranged between the two double-half inner rings 6 and corresponds to a circle of deep groove ball rolling body track 7 arranged in the middle of the inner circumference of the outer ring 1, and a ball rolling body 15 is combined to form a middle ball structure of the deep groove ball bearing,
the two double-half inner ring rings 6 are coaxially arranged on two sides of the deep groove ball bearing inner ring 3 respectively, and a circle of circular roller track 12 is arranged on the outer circumference of each of the two double-half inner ring rings 6.
Example 2:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 2 comprises: the deep groove ball bearing comprises an outer ring 1, two double-half inner rings 6, a deep groove ball bearing inner ring 3 and three rows of rolling bodies; the method is characterized in that: a circle of deep groove spherical rolling body tracks 7 are arranged in the middle of the axial distance of the inner circumference of the outer ring 1, spherical rolling bodies 15 are arranged in the deep groove spherical rolling body tracks 7, a row of cylindrical roller tracks 13 are respectively arranged at the two ends of the deep groove spherical rolling body tracks 7 at intervals corresponding to each other, cylindrical rollers 17 are arranged in the cylindrical roller tracks 13,
the inner ring 3 of the deep groove ball bearing is arranged between the two double-half inner rings 6 and corresponds to a circle of deep groove ball rolling body track 7 arranged in the middle of the inner circumference of the outer ring 1, and a ball rolling body 15 is combined to form a middle ball structure of the deep groove ball bearing,
the two double-half inner ring rings 6 are coaxially arranged at two sides of the deep groove ball bearing inner ring 3 respectively, the outer circumferences of the two double-half inner ring rings 6 are respectively provided with a cylindrical roller track 13, the outer ends of the cylindrical roller tracks 13 of the two double-half inner ring rings 6 are respectively provided with a cylindrical roller outer retaining shoulder 21,
example 3:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 3 comprises: an outer race 1, two double-half inner races 6, two rows of spherical rollers 18; the method is characterized in that: the outer race 1 is provided with a row of spherical roller tracks 14 at intervals on two sides of the inner circumferential axial distance, spherical rollers 18 are respectively arranged in the spherical roller tracks 14,
the two double-half inner ring 6 are coaxially arranged at two sides of the inner circumference of the outer ring 1 provided with two rows of spherical roller tracks 14, the outer circumferences of the two double-half inner ring 6 are respectively provided with a double-half inner ring reverse spherical roller track 22, the two double-half inner ring 6 are coaxially combined into a whole, and the double-half inner ring reverse spherical roller tracks 22 respectively arranged at the outer circumferences of the two double-half inner ring 6 are combined to form a complete reverse spherical roller track 23, the reverse spherical roller track 23 corresponds to the two rows of spherical roller tracks 14 respectively arranged at two sides of the inner circumference of the outer ring 1, and a reverse spherical roller bearing structure is formed by the combination of the two rows of spherical rollers 18,
example 4:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 4 comprises: an inner ring 2, two double-half outer rings 5, a deep groove ball bearing outer ring 4 and three rows of rolling bodies; a circle of deep groove spherical rolling body track 7 is arranged in the middle of the axial distance of the outer circumference of the inner ferrule 2, spherical rolling bodies 15 are arranged in the deep groove spherical rolling body track, a row of cylindrical roller tracks 13 are respectively arranged at the two ends of the deep groove spherical rolling body track 7 at intervals corresponding to each other, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks,
the outer ring 4 of the deep groove ball bearing is arranged between the two double-half outer rings 5 and corresponds to a circle of deep groove ball rolling body track 7 arranged in the middle of the outer circumference of the inner ring 2, and a central ball structure of the deep groove ball bearing is formed by combining ball rolling bodies 15,
the two double-half outer rings 5 are coaxially arranged on two sides of the outer ring 4 of the deep groove ball bearing respectively, the inner circumferences of the two double-half outer rings 5 are provided with a circle of cylindrical roller track 13 respectively, and the outer ends of the cylindrical roller tracks 13 are provided with cylindrical roller outer retaining shoulders 21 respectively.
Example 5:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 5 comprises: an inner ring 2, two double-half outer rings 5, a deep groove ball bearing outer ring 4 and three rows of rolling bodies; a circle of deep groove spherical rolling body track 7 is arranged in the middle of the axial distance of the outer circumference of the inner ferrule 2, spherical rolling bodies 15 are arranged in the deep groove spherical rolling body track 7, a row of circular roller tracks 12 are respectively arranged at the two ends of the deep groove spherical rolling body track 7 at intervals corresponding to each other, circular rollers 16 are arranged in the circular roller tracks 12,
the outer ring 2 of the deep groove ball bearing is arranged between the two double-half outer rings 5 and corresponds to a circle of deep groove ball rolling body track 7 arranged on the outer circumference of the inner ring 2, and a central ball structure of the deep groove ball bearing is formed by combining spherical rolling bodies 15,
the two double-half outer rings 5 are coaxially arranged on two sides of the outer ring 4 of the deep groove ball bearing respectively, and the inner circumferences of the two double-half outer rings 5 are provided with a circle of circular roller track 12 respectively.
Example 6:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 6 comprises: an inner ring 2, two double-half outer rings 5 and three rows of rolling bodies; a circle of deep groove spherical rolling body track 7 is arranged in the middle of the axial distance of the outer circumference of the inner ferrule 2, spherical rolling bodies 15 are arranged in the deep groove spherical rolling body track 7, a row of cylindrical roller tracks 13 are respectively arranged at the two ends of the deep groove spherical rolling body track 7 at intervals corresponding to each other, cylindrical rollers 17 are arranged in the cylindrical roller tracks 13,
the two double-half outer rings 5 are coaxially arranged at two sides of a deep groove spherical rolling body track 7 arranged in the middle of the outer circumference of the inner ring 2, a circle of cylindrical roller track 13 is respectively arranged in the middle of the inner circumference of each double-half outer ring 5, cylindrical roller outer retaining shoulders 21 are respectively arranged at the outer ends of the cylindrical roller tracks 13, cylindrical roller inner retaining shoulders 20 are respectively arranged at the inner ends of the cylindrical roller tracks 13, three-point contact spherical rolling body tracks 19 are respectively arranged on the inner circumference of the ends of the cylindrical roller inner retaining shoulders 20,
two double-half outer rings 5 are respectively arranged on two sides of a deep groove ball rolling body track 7 in the middle of the outer circumference of the inner ring 2, three-point contact ball rolling body tracks 19 arranged at the ends of cylindrical roller inner retaining shoulders 20 of the two double-half outer rings 5 respectively correspond to a circle of deep groove ball rolling body track 7 arranged in the middle of the outer circumference of the inner ring, and a ball-in-place structure of the three-point contact ball bearing is formed by combining the ball rolling bodies 15.
Example 7:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 7 comprises: an inner ring 2, two double-half outer rings 5 and four rows of rolling bodies; two circles of double-row angular contact spherical rolling element tracks 9 are arranged in the middle of the axial distance of the outer circumference of the inner ferrule 2, spherical rolling elements 15 are respectively arranged in the double-row angular contact spherical rolling element tracks 9, a row of cylindrical roller tracks 13 are respectively arranged in the two ends of the two circles of angular contact spherical rolling element tracks 9 at intervals corresponding to each other, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 13,
the two double-half outer rings 5 are coaxially arranged on two sides of two double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner ring 2 respectively, a circle of cylindrical roller track 13 is arranged on the outer side of the inner circumference of each of the two double-half outer rings 5, a cylindrical roller outer retaining shoulder 21 is arranged on the outer end of each of the cylindrical roller tracks 13, a cylindrical roller inner retaining shoulder 20 is arranged on the inner end of each of the cylindrical roller tracks 13, a circle of angular contact spherical rolling element track 24 is arranged on the inner circumference of each of the cylindrical roller inner retaining shoulders 20, the angular contact spherical rolling element tracks 24 arranged on the cylindrical roller inner retaining shoulders 20 of the two double-half outer rings 5 correspond to the two double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of the inner ring 2 respectively, and the two rows of spherical rolling elements 15 are combined.
Example 8:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 8 comprises: an outer ring 1, two double-half inner rings 6 and four rows of rolling bodies; 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 outer ring 1, spherical rolling elements 15 are respectively arranged in the double-row angular contact spherical rolling element tracks 9, a row of cylindrical roller tracks 13 are respectively arranged at the two ends of the double-row angular contact spherical rolling element tracks 9 with corresponding distance, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 13,
the two double-half inner ring 6 are coaxially arranged at 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 outer ring 1 respectively, the outer sides of the outer circumferences of the two double-half inner ring 6 are provided with a circle of cylindrical roller track 13 respectively, the outer ends of the cylindrical roller track 13 are provided with cylindrical roller outer retaining shoulders 21 respectively, the inner ends of the cylindrical roller track 13 are provided with cylindrical roller inner retaining shoulders 20 respectively, the outer circumferences of the cylindrical roller inner retaining shoulders 20 are provided with a circle of angular contact spherical rolling element tracks 24 respectively, the angular contact spherical rolling element tracks 24 arranged on the two double-half inner ring 6 cylindrical roller inner retaining shoulders 20 correspond to the two circles of double-row angular contact spherical rolling element tracks 9 arranged in the middle of the inner circumference of the outer ring respectively, and the two rows of spherical rolling elements 15.
Example 9:
the novel high-speed heavy-load high-speed railway bearing shown in fig. 9 comprises: two double-half outer rings 5, two double-half inner rings 6, a double-row angular contact ball bearing inner ring 25 and four rows of rolling bodies; the middle part of the axial distance of the outer circumference of the inner ferrule 25 of the double-row angular contact ball bearing is provided with two circles of double-row angular contact ball rolling element tracks 9, the ball rolling elements 15 are respectively arranged in the double-row angular contact ball rolling element tracks 9,
the two double-half inner ring 6 are coaxially arranged at two sides of the double-row angular contact ball bearing inner ring 25 respectively, the outer circumferences of the two double-half inner ring 6 are respectively provided with a circular roller track 12,
the two double-half outer rings 5 are coaxially arranged at two sides of two circles of double-row angular contact spherical rolling element tracks 9 arranged in the middle of the outer circumference of an inner ring 25 of the double-row angular contact ball bearing, a circle of circular ring roller track 12 is respectively arranged at the outer side of the inner circumference of each of the two double-half outer rings 5, circular ring rollers 16 are respectively arranged in the circular ring roller tracks 12, angular contact ball rolling element tracks 24 are respectively arranged at the inner sides of the inner circumferences of the two double-half outer rings 5, the angular contact ball rolling element tracks 24 arranged at the inner sides of the inner circumferences of the two double-half outer rings 5 are respectively corresponding to the two circles of double-row angular contact ball rolling element tracks 9 arranged in the middle of the inner ring 25 of the double-row angular contact.
Example 10:
the "new high-speed heavy-load high-speed railway bearing" shown in fig. 10 includes: an inner ring 2, a double-row deep groove ball bearing outer ring 11, two double-half outer rings 5 and four rows of rolling bodies; two circles of double-row deep groove spherical rolling element tracks 8 are arranged in the middle of the axial distance of the outer circumference of the inner ferrule 2, spherical rolling elements 15 are respectively arranged in the double-row deep groove spherical rolling element tracks 8, a row of cylindrical roller tracks 13 are respectively arranged at the corresponding distance of two ends of the double-row deep groove spherical rolling element tracks 8, cylindrical rollers 17 are respectively arranged in the cylindrical roller tracks 13, cylindrical roller outer retaining shoulders 13-1 are respectively arranged at the outer ends of the cylindrical roller tracks 13,
the outer ring 11 of the double-row deep groove ball bearing is arranged between the two double-half outer rings 5 and corresponds to two circles of double-row deep groove ball rolling element tracks 8 arranged in the middle of the outer circumference of the inner ring 2, and a mid-ball structure of the double-row deep groove ball bearing is formed by combining two rows of spherical rolling elements 15,
the two double-half outer rings 5 are coaxially arranged on two sides of an outer ring 11 of the double-row deep groove ball bearing respectively, the inner circumferences of the two double-half outer rings 5 are respectively provided with a circle of cylindrical roller track 13, and the outer ends of the cylindrical roller tracks 13 of the two double-half outer rings 5 are provided with cylindrical roller outer retaining shoulders 21.
Claims (11)
1. A novel high-speed heavy-load high-speed railway bearing comprises: the device comprises an outer ring, two double-half inner rings, a deep groove ball bearing inner ring and three rows of rolling bodies; the method is characterized in that: a circle of deep groove spherical rolling body tracks are arranged in the middle of the axial distance of the inner circumference of the outer ring, spherical rolling bodies are arranged in the deep groove spherical rolling body tracks, a row of circular roller tracks are respectively arranged at the two ends of the deep groove spherical rolling body tracks at intervals corresponding to each other, circular rollers are respectively arranged in the circular roller tracks,
the inner ring of the deep groove ball bearing is arranged between the two double-half inner rings and corresponds to a circle of deep groove ball rolling body track arranged on the inner circumference of the outer ring, and a central ball structure of the deep groove ball bearing is formed by combining the spherical rolling bodies,
the two double-half inner ring bodies are coaxially arranged on two sides of the inner ring of the deep groove ball bearing respectively, and a circle of circular roller track is arranged on the outer circumference of each of the two double-half inner ring bodies.
2. The novel high-speed heavy-load high-speed railway bearing according to claim 1, wherein: a circle of deep groove spherical rolling body track arranged in the middle of the inner circumference of the outer ring is provided with a row of cylindrical roller tracks at intervals corresponding to the two ends of the deep groove spherical rolling body track, cylindrical rollers are arranged in the cylindrical roller tracks,
the outer circumferences of the two double-half inner ring are respectively provided with a cylindrical roller track, and the outer ends of the two double-half inner ring cylindrical roller tracks are respectively provided with a cylindrical roller outer retaining shoulder.
3. A novel high-speed heavy-load high-speed railway bearing comprises: the spherical roller bearing comprises an outer ring, two double-half inner rings and two rows of spherical rollers; the method is characterized in that: the outer ring is provided with a row of spherical roller tracks at intervals corresponding to the two sides of the inner circumferential axial distance, spherical rollers are respectively arranged in the spherical roller tracks,
the two double-half inner ferrules are respectively arranged on two sides of two rows of spherical roller tracks arranged on the inner circumference of the outer ferrule, the two double-half inner ferrules are respectively provided with double-half inner ferrule reverse spherical roller tracks on the outer circumferences of the two double-half inner ferrules, the two double-half inner ferrules are coaxially combined into a whole, the double-half inner ferrule reverse spherical roller tracks respectively arranged on the outer circumferences of the two double-half inner ferrules are combined to form reverse spherical roller tracks with the same radius, the reverse spherical roller tracks correspond to the two rows of spherical roller tracks respectively arranged on two sides of the inner circumference of the outer ferrule, and the reverse spherical roller bearing structure is formed by combining the two rows of spherical rollers.
4. A novel high-speed heavy-load high-speed railway bearing comprises: the deep groove ball bearing comprises an inner ring, two double-half outer rings, a deep groove ball bearing outer ring and three rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule is provided with a circle of deep groove spherical rolling body track, spherical rolling bodies are arranged in the deep groove spherical rolling body track, two rows of cylindrical roller tracks are respectively arranged at the two ends of the deep groove spherical rolling body track at intervals corresponding to each other, and cylindrical rollers are respectively arranged in the cylindrical roller tracks.
The outer ring of the deep groove ball bearing is arranged between the two double-half outer rings and corresponds to a circle of deep groove ball rolling body track arranged in the middle of the outer circumference of the inner ring, a central ball structure of the deep groove ball bearing is formed by combining the ball rolling bodies,
the two double-half outer rings are coaxially arranged on two sides of the outer ring of the deep groove ball bearing respectively, a circle of cylindrical roller track is arranged on the inner circumference of each of the two double-half outer rings, and cylindrical roller outer retaining shoulders are arranged at the outer ends of the cylindrical roller tracks of the two double-half outer rings.
5. The novel high-speed heavy-load high-speed railway bearing according to claim 4, wherein: a circle of deep groove spherical rolling body tracks are arranged in the middle of the axial distance of the outer circumference of the inner ferrule, a row of circular roller tracks are respectively arranged at the two ends of the deep groove spherical rolling body tracks at corresponding intervals, circular rollers are respectively arranged in the circular roller tracks,
the inner circumferences of the two double-half outer rings are respectively provided with a circle of circular roller track.
6. The novel high-speed heavy-load high-speed railway bearing according to claim 4, wherein: the double-half outer ring and the same axle center are respectively arranged at two sides of a deep groove spherical rolling body track arranged in the middle of the outer circumference of the inner ring, the outer ends of cylindrical roller tracks arranged in the inner circumferences 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 inner circumference of the end head of the cylindrical roller inner retaining shoulder is respectively provided with a three-point contact spherical rolling body track, the three-point contact spherical rolling body tracks arranged at the end heads of the retaining shoulders in the two double-half outer ring cylindrical rollers are respectively corresponding to a circle of deep groove ball rolling body track arranged in the middle of the outer circumference of the inner ring, and a three-point contact ball bearing.
7. A novel high-speed heavy-load high-speed railway bearing comprises: two double-half outer rings, one inner ring and four rows of rolling bodies; the method is characterized in that: two circles of double-row angular contact spherical rolling element tracks are arranged in the middle of the axial distance of the outer circumference of the inner ferrule, spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks, a row of cylindrical roller tracks are respectively arranged at the two ends of the two circles of double-row angular contact spherical rolling element tracks with corresponding distance, cylindrical rollers are respectively arranged in the cylindrical roller tracks,
the two double-half outer sleeves are coaxially arranged on two sides of two circles of angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the inner sleeve ring respectively, a circle of cylindrical roller track is arranged in the middle of the inner circumference of each double-half outer sleeve 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, 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 ring cylindrical roller inner retaining shoulders of each double-half outer sleeve ring are corresponding to the two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the inner sleeve ring respectively, and the ball structure of.
8. A novel high-speed heavy-load high-speed railway bearing comprises: the rolling mechanism comprises an outer ring, two double-half inner rings and four rows of rolling bodies; the method is characterized in that: two circles of double-row angular contact spherical rolling element tracks are arranged in the middle of the axial distance of the inner circumference of the outer ring, spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks, a row of cylindrical roller tracks are respectively arranged at the two ends of the two circles of double-row angular contact spherical rolling element tracks with corresponding distance, 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 arranged in the middle of the inner circumference of the outer ferrule respectively, a circle of cylindrical roller track is arranged in the middle of the outer circumference of each of the two double-half inner ferrules, a cylindrical roller outer retaining shoulder is arranged at the outer end of each of the cylindrical roller tracks, a cylindrical roller inner retaining shoulder is arranged at the inner end of each of the cylindrical roller tracks, an angular contact spherical rolling element track is arranged on the outer circumference of each of the cylindrical roller inner retaining shoulders, the angular contact spherical rolling element tracks arranged on the two double-half inner ferrule cylindrical roller inner retaining shoulders correspond to the two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the inner circumference of the outer ferrule respectively, and the double-row angular contact ball.
9. A novel high-speed heavy-load high-speed railway bearing comprises: the double-row angular contact ball bearing comprises two double-half outer rings, two double-half inner rings, a double-row angular contact ball bearing inner ring and four rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule of the double-row angular contact ball bearing is provided with two circles of double-row angular contact spherical rolling element tracks, spherical rolling elements are respectively arranged in the double-row angular contact spherical rolling element tracks,
the two double-half inner ring is coaxially arranged at two sides of the inner ring of the double-row angular contact ball bearing respectively, the outer circumferences of the two double-half inner ring are respectively provided with a circular roller track,
the two double-half outer rings are coaxially arranged on two sides of two circles of double-row angular contact spherical rolling element tracks arranged in the middle of the outer circumference of the inner ring of the double-row angular contact ball bearing, a circle of circular roller track is respectively arranged on the outer sides of the inner circumferences of the two double-half outer rings, a circular roller is arranged in the circular roller track, angular contact ball rolling element tracks are respectively arranged on the inner sides of the inner circumferences of the two double-half outer rings, the angular contact ball rolling element tracks arranged on the inner circumferences of the two double-half outer rings correspond to the two circles of angular contact ball rolling element tracks arranged in the middle of the outer circumference of the inner ring of the double-row angular contact ball bearing respectively, and a double.
10. A novel high-speed heavy-load high-speed railway bearing comprises: an inner sleeve ring, a double-row deep groove ball bearing outer sleeve ring, two double-half outer sleeve rings and four rows of rolling bodies; the method is characterized in that: the middle part of the axial distance of the outer circumference of the inner ferrule is provided with two circles of double-row deep groove spherical rolling element tracks, spherical rolling elements are respectively arranged in the double-row deep groove spherical rolling element tracks, two rows of cylindrical roller tracks are respectively arranged at the corresponding intervals of two ends of the two circles of double-row deep groove spherical tracks, cylindrical rollers are respectively arranged in the cylindrical roller tracks, and the outer ends of the cylindrical roller tracks at two sides of the outer circumference of the inner ferrule are respectively provided with a cylindrical roller outer retaining shoulder,
the outer ring of the double-row deep groove ball bearing is arranged between the two double-half outer rings and corresponds to two rings of deep groove ball rolling body tracks arranged in the middle of the outer circumference of the inner ring, a middle ball structure of the double-row deep groove ball bearing is formed by combining two rows of ball rolling bodies,
the two double-half outer rings are coaxially arranged on two sides of the outer ring of the double-row deep groove ball bearing respectively, a circle of cylindrical roller track is arranged on the inner circumference of each of the two double-half outer rings, and cylindrical roller outer retaining shoulders are arranged on the outer ends of the cylindrical roller tracks of the two double-half outer rings.
11. A novel high-speed heavy-load high-speed railway bearing comprises: the double-row deep groove ball bearing comprises an outer ring, a double-row deep groove ball bearing inner ring, two double-half inner rings and four rows of rolling bodies; the method is characterized in that: two circles of double-row deep groove spherical rolling element tracks are arranged in the middle of the axial distance of the inner circumference of the outer sleeve ring, spherical rolling elements are respectively arranged in the double-row deep groove spherical rolling element tracks, a row of cylindrical roller tracks are respectively arranged at the intervals of two ends of the two circles of double-row deep groove spherical tracks, cylindrical rollers are respectively arranged in the cylindrical roller tracks, and cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the outer sleeve ring cylindrical roller tracks,
the inner ring of the double-row deep groove ball bearing is arranged between the two double-half inner rings and corresponds to two circles of deep groove ball rolling element tracks arranged in the middle of the inner circumference of the outer ring, and a middle ball structure of the double-row deep groove ball bearing is formed by combining two rows of ball rolling elements,
the two double-half inner ring coaxial centers are respectively arranged at two sides of the inner ring of the double-row deep groove ball bearing, a circle of cylindrical roller track is respectively arranged at the outer circumferences of the two double-half inner ring, and cylindrical roller outer retaining shoulders are respectively arranged at the outer ends of the cylindrical roller tracks of the two double-half inner ring.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819143A (en) * | 2021-09-30 | 2021-12-21 | 北京京冶轴承股份有限公司 | High-speed train bogie hybrid support device and bogie |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819143A (en) * | 2021-09-30 | 2021-12-21 | 北京京冶轴承股份有限公司 | High-speed train bogie hybrid support device and bogie |
| CN113819143B (en) * | 2021-09-30 | 2023-12-22 | 北京京冶轴承股份有限公司 | Mixed strutting arrangement of high-speed train bogie and bogie |
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