CN119572620A

CN119572620A - Disk cage cylindrical roller bearing and assembling method thereof

Info

Publication number: CN119572620A
Application number: CN202411733030.3A
Authority: CN
Inventors: 于长鑫; 尹洪涛; 李爽; 郝旭; 吴非; 王峰; 郑晓菲; 唐虎娇; 许浩; 吴林学
Original assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd; Wafangdian Bearing Group Corp
Current assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd; Wafangdian Bearing Group Corp
Priority date: 2024-11-29
Filing date: 2024-11-29
Publication date: 2025-03-07

Abstract

The present invention relates to a disc-type retainer cylindrical roller bearing and an assembly method thereof, belonging to the field of bearing assembly and manufacturing technology, comprising an inner ring, an outer ring, a roller and a disc-type retainer, wherein the inner ring and the outer ring are coaxially arranged, and the disc-type retainer and a plurality of rollers are arranged between the inner ring and the outer ring; the outer ring is formed by combining two annular split half outer rings, and a retainer limiting groove for positioning the disc-type retainer is arranged in the middle of the inner diameter surface of the outer ring, and the retainer limiting groove is formed between the two split half outer rings, and the outer edge of the disc-type retainer is assembled in the retainer limiting groove, and ribs are arranged on both sides of the inner diameter surface of the outer ring, and the rollers are axially limited by the ribs. The restriction on the retainer is reduced by the split outer ring of the bearing, and the split outer ring is combined with the disc-type retainer to effectively control the assembly space of the retainer, so that the bearing has the advantages of high load-bearing capacity, long life and high reliability, and improves the performance of the gearbox while avoiding losses caused by failure and downtime.

Description

Disk cage cylindrical roller bearing and assembling method thereof

Technical Field

The invention relates to a cylindrical roller bearing with a disk retainer and an assembling method thereof, belonging to the technical field of bearing assembling and manufacturing.

Background

With the continuous development of equipment technology, the performance requirements on industrial gearboxes are higher and higher, particularly in petrochemical industry, the performance of the existing cylindrical roller bearing is unable to meet the increasing capacity requirement, and abnormal production stopping can cause great economic loss, so that the bearing is required to have the performances of high load bearing, long service life and high reliability. The conventional cylindrical roller bearing retainer occupies a larger space, reduces the bearing capacity of the bearing, and fully-loaded cylindrical roller bearings are not suitable for working conditions with high rotating speed and are easy to be blocked although the bearing capacity of the fully-loaded cylindrical roller bearings is greatly improved.

Disclosure of Invention

According to the defects of the prior art, the invention aims to comprehensively consider the working conditions such as bearing capacity, rotating speed and the like of the bearing, and provide the cylindrical roller bearing with the disc retainer, which can meet the requirements of high performance and high reliability of a large-scale industrial gearbox.

The technical scheme includes that the disc type retainer cylindrical roller bearing comprises an inner ring, an outer ring, rollers and a disc type retainer, wherein the inner ring and the outer ring are coaxially arranged, the disc type retainer and a plurality of rollers are arranged between the inner ring and the outer ring, the outer ring is formed by combining two annular split half outer rings, a retainer limiting groove for positioning the disc type retainer is formed in the middle of an inner diameter surface of the outer ring, the retainer limiting groove is formed between the two split half outer rings, the outer edge of the disc type retainer is assembled in the retainer limiting groove, outer ring flanges are arranged on two sides of the inner diameter surface of the outer ring, and the rollers are axially limited through the outer ring flanges.

Further, an outer V-shaped groove is formed in the middle of the outer diameter surface of the outer ring, the outer V-shaped groove is formed in a circle along the ring shape, an inner V-shaped groove is formed in the outer diameter surface of the retainer limiting groove, the inner V-shaped groove is formed in a circle along the ring shape, the outer V-shaped groove is symmetrically arranged along the axial center line of the outer ring, the groove bottom of the outer V-shaped groove is located on the axial center line of the outer ring, the inner V-shaped groove is symmetrically arranged along the axial center line of the outer ring, and the groove bottom of the inner V-shaped groove is located on the axial center line of the outer ring.

Further, the two split half outer rings are formed by splitting an integral outer ring along an outer V-shaped groove and an inner V-shaped groove.

Further, a V-shaped separating groove is formed in the middle of the outer diameter surface of the outer ring, the separating groove is arranged along a circle, the outer V-shaped groove is formed in the bottom of the separating groove, the notch of the outer V-shaped groove extends to the bottom of the separating groove, the inclination angles of the groove edges of the outer V-shaped groove and the inner V-shaped groove are consistent with the angle of a processing cutter, the inclination angle of the groove edge of the separating groove is 120 degrees, and the distance between the bottom of the outer V-shaped groove and the bottom of the inner V-shaped groove is 1-1.5 mm.

Further, each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, the semicircular clamping grooves are uniformly arranged for a circle along the outer diameter surface of the split half outer ring, the clamping grooves on the two split half outer rings are symmetrically arranged along the outer ring split surface, the two split half outer rings are pairwise combined to form a complete annular clamping groove, an annular clamping ring is embedded in each annular clamping groove, and the two split half outer rings are locked through the plurality of clamping rings.

Further, the inner diameter of the clamping ring is in interference fit with the clamping groove.

Further, the radial included angle between the outer ring flange and the outer ring is 15'-20', the end face of the roller is arranged to be a sphere base surface, a roller concave cavity is arranged in the center of the end face, and the outer ring flange is in contact limit with the sphere base surface of the roller.

Further, two end faces of the outer edge of the disc-type retainer correspond to the side walls of the retainer limiting groove, an axial gap between the disc-type retainer and the outer ring is formed between the two end faces of the outer edge of the disc-type retainer and the side walls of the retainer limiting groove, the outer diameter face of the disc-type retainer corresponds to the groove bottom of the retainer limiting groove, and a radial gap between the disc-type retainer and the outer ring is formed between the outer diameter face of the disc-type retainer and the groove bottom of the retainer limiting groove.

Further, the radial clearance is greater than the axial clearance.

The disc type retainer comprises an annular body, wherein the annular body is an integrally formed sheet type disc, the outer edge of the annular body of the disc type retainer is assembled in a retainer limiting groove of an outer ring, a plurality of retainer beams extending towards the center direction of the disc type retainer are formed along the circumferential inner diameter of the annular body, and the retainer beams are uniformly arranged in the annular body.

Further, pockets of the disc-type retainer are formed between every two adjacent retainer beams, the pockets are in a semi-open mode, and the center diameter of a circle where the pockets are located is matched with the diameter of the roller.

Further, each pocket is formed by adjacent two cage beam side walls to form a contact surface matched with the outer surface of the roller, namely the inner wall surface of the pocket.

Further, the disc cage pockets the rollers in the radial direction of the rollers and is located at a position intermediate the entire axial length of the rollers.

Further, the end of the retainer beam extending towards the center of the disc-type retainer is the free end of the retainer beam, and a locking opening of a pocket hole is formed between the free ends of every two adjacent retainer beams.

Further, a plurality of oil holes are uniformly formed in the outer edge of the disc-type retainer along the circumferential direction, the plurality of oil holes comprise radial lubricating oil holes and axial lubricating oil holes which are the same in number and in one-to-one correspondence, the plurality of axial lubricating oil holes are formed in the outer edge of the disc-type retainer corresponding to the positions of the retainer beams and penetrate through the end faces of the two sides of the disc-type retainer, and the plurality of radial lubricating oil holes are perpendicular to the axial lubricating oil holes from the outer diameter surface of the disc-type retainer and are communicated with the axial lubricating oil holes.

The assembly method of the disc type retainer cylindrical roller bearing comprises the steps of integrally machining and forming an outer V-shaped groove on the outer diameter surface of the integral outer ring, machining a retainer limiting groove and an inner V-shaped groove on the inner diameter surface of the integral outer ring, splitting the integral outer ring along the outer V-shaped groove and the inner V-shaped groove to form two annular split half outer rings, firstly installing rollers into the disc type retainer, then installing the disc type retainer with the rollers into the retainer limiting groove between the two split half outer rings, locking the two split half outer rings through a plurality of clamping rings, and finally installing the inner ring into the bearing from one side of the bearing after the outer assembly is completed.

The split bearing outer ring structure reduces the limit on the structure of the retainer, and the split outer ring is combined with the disk retainer, so that the assembly space of the retainer is effectively controlled, the disk retainer cylindrical roller bearing has the advantages of high bearing capacity, long service life and high reliability, the performance of the gear box is improved, and meanwhile, the loss caused by fault shutdown is avoided.

Drawings

FIG. 1 is a schematic view of a disk cage cylindrical roller bearing of the present invention;

FIG. 2 is a schematic view of a bearing outer race structure;

FIG. 3 is an enlarged view of the outer ring V-shaped groove structure;

FIG. 4 is an enlarged view of the outer ring flange structure;

FIG. 5 is a schematic view of a bearing roller configuration;

FIG. 6 is a schematic view of a clamp ring assembly;

FIG. 7 is an exploded view of the clamp ring separated from the clamp groove;

FIG. 8 is a schematic view of a bearing disk retainer structure;

FIG. 9 is a front cross-sectional view of FIG. 8;

FIG. 10 is a schematic view of a disc cage mounting roller;

FIG. 11 is a cross-sectional view A-A of FIG. 9;

FIG. 12 is an enlarged view of FIG. 11 at C and assembled with the bearing outer race;

FIG. 13 is an enlarged view of the structure of FIG. 9 at B and assembled with the roller;

in the figure:

100. An inner ring is arranged on the inner ring,

200. The outer ring, 210, the first split half outer ring, 220, the second split half outer ring, 230, the retainer limiting groove, 240, the outer ring flange, 250, the outer V-shaped groove, 260, the inner V-shaped groove, 270, the separating groove, 280 and the clamping groove;

300. a roller, 310, a ball base, 320, a roller pocket;

400. Disc-type retainer 410, retainer beam 411, free end of retainer beam 420, pocket hole 421, inner wall surface of pocket hole 430, locking port 440, radial lubricating oil hole 450, axial lubricating oil hole;

500. A clamping ring;

600. an axial gap;

700. Radial clearance.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1-12, the disc-type retainer cylindrical roller bearing comprises an inner ring 100, an outer ring 200, rollers 300 and a disc-type retainer 400, wherein the inner ring 100 and the outer ring 200 are coaxially arranged, a plurality of rollers 300 and the disc-type retainer 400 are arranged between the inner ring and the outer ring, the outer ring 200 is formed by combining two annular split half outer rings 210 and 220, a retainer limiting groove 230 for positioning the disc-type retainer is arranged in the middle of the inner diameter surface of the outer ring, the retainer limiting groove 230 is formed between the two split half outer rings, the outer edge of the disc-type retainer 400 is assembled in the retainer limiting groove 230, outer ring flanges 240 are arranged on two sides of the inner diameter surface of the outer ring, and the rollers are axially limited through the outer ring flanges 240. The two split half outer rings are correspondingly provided with clamping grooves 280 on the outer diameter surfaces, clamping rings 500 are embedded in the clamping grooves 280, and the two split half outer rings 210 and 220 are locked through the plurality of clamping rings 500.

Further, each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, the semicircular clamping grooves are uniformly arranged for a circle along the outer diameter surface of the split half outer ring, the clamping grooves on the two split half outer rings are symmetrically arranged along the outer ring split surface, the two split half outer rings are pairwise combined to form a complete annular clamping groove, an annular clamping ring is embedded in each annular clamping groove, and the two split half outer rings are locked through the plurality of clamping rings. The inner diameter of the clamping ring is in interference fit with the clamping groove.

Specifically, in this embodiment, 13 clamping rings are provided and are uniformly distributed along the circumferential direction of the outer ring.

Further, an outer V-shaped groove 250 is arranged in the middle of the outer diameter surface of the outer ring, the outer V-shaped groove 250 is arranged in a circle along the ring shape, an inner V-shaped groove 260 is arranged on the outer diameter surface of the retainer limiting groove 230, the inner V-shaped groove 260 is arranged in a circle along the ring shape, the outer V-shaped groove 250 is symmetrically arranged along the axial center line of the outer ring, the groove bottom of the outer V-shaped groove is positioned on the axial center line of the outer ring, the inner V-shaped groove 260 is symmetrically arranged along the axial center line of the outer ring, and the groove bottom of the inner V-shaped groove is positioned on the axial center line of the outer ring. The two split half outer rings are formed by splitting an integral outer ring along an outer V-shaped groove and an inner V-shaped groove.

Based on the above technical scheme, the inner V-shaped groove 260 and the outer V-shaped groove 250 are designed on the inner surface and the outer surface of the outer ring, so that the bearing outer ring is split along the opening direction of the inner V-shaped groove 260, the splitting process is safer and more reliable, and the cost is reduced. According to the split outer ring assembly, split surfaces of the two split half outer rings can correspond to each other, and compared with the split half outer rings which are processed and matched independently, the split outer ring assembly has a better assembly effect.

As shown in fig. 2, the outer ring of the bearing is designed as an integral structure, after the whole processing of the ring, the outer ring is split into two halves through the inner V-shaped groove 260 and the outer V-shaped groove 250, when the bearing is assembled, the roller 300 is firstly put into the disc-type retainer 400, then the disc-type retainer 400 is mounted in the retainer spacing groove 230 between the two split half outer rings, and finally the two split half outer rings are locked through the plurality of clamping rings 500.

Further, a V-shaped separating groove 270 is arranged in the middle of the outer diameter surface of the outer ring, the separating groove 270 is arranged along a circle, the outer V-shaped groove 250 is arranged at the bottom of the separating groove, the notch of the outer V-shaped groove 250 extends to the bottom of the separating groove 270, the inclination angles of the edges of the outer V-shaped groove 250 and the inner V-shaped groove 260 are consistent with the angle of the processing tool, the inclination angle of the edge of the separating groove 270 is 120 degrees, and the distance S between the bottom of the outer V-shaped groove 250 and the bottom of the inner V-shaped groove 260 is 1-1.5 mm.

Based on the technical scheme, the inner diameter of the bearing outer ring and the outer diameter of the retainer limit groove are both designed into V-shaped grooves, as shown in fig. 3, the angles of the V-shaped grooves are alpha, the angles of the alpha are generally consistent with the angles of the processing cutters, the angles of the upper part of the V-shaped grooves are beta, the value of the angle of the upper part of the V-shaped grooves is 120 DEG, the distance S between the bottoms of the inner V-shaped groove and the outer V-shaped groove is controlled to be 1-1.5 mm, so that the bearing outer ring can be conveniently split into two halves through the design, and the section is relatively more regular. The separation groove 270 provides an operation space for processing the outer V-shaped groove 250, and simultaneously reduces the grooving depth of the outer V-shaped groove, so that the distance between the groove bottom of the outer V-shaped groove 250 and the groove bottom of the inner V-shaped groove 260 is controlled to be 1-1.5 mm.

Further, the radial included angle between the outer ring flange 240 and the outer ring is 15'-20', the end face of the roller 300 is set to be a sphere base surface 310, a roller concave cavity 320 is designed in the center of the end face of the cylindrical roller, and the outer ring flange 240 is limited by contact with the sphere base surface 310.

Based on the above technical solution, as shown in fig. 4, the bearing flange 240 forms an included angle γ with the radial direction, which may be 15 'or 20', etc., as shown in fig. 5, the cylindrical roller end face designs a ball base surface, the cylindrical roller end face center designs a roller recess, and the radius R of the ball base surface 310 is differentially designed according to the size and the contact position of the bearing, so that the contact area between the bearing flange and the cylindrical roller is reduced, the wear is reduced, and the limit rotation speed of the bearing is increased.

Further, the two end surfaces of the outer edge of the disc-type retainer 400 correspond to the side walls of the retainer-limiting groove 230, an axial gap 600 between the disc-type retainer 400 and the outer ring 200 is formed between the two end surfaces of the outer edge of the disc-type retainer 400 and the side walls of the retainer-limiting groove 230, the outer diameter surface of the disc-type retainer 400 corresponds to the groove bottom of the retainer-limiting groove 230, and a radial gap 700 between the disc-type retainer 400 and the outer ring 200 is formed between the outer diameter surface of the disc-type retainer 400 and the groove bottom of the retainer-limiting groove 230. The radial gap 700 is larger than the axial gap 600 to prevent cage wear during operation.

Specifically, the radial clearance is 0.7-1.0 mm, the axial clearance is 0.2-0.4 mm, and the clearance or slight difference is generated according to the change of the size of the bearing.

Based on the above technical scheme, the distance between the two side walls of the retainer spacing groove 230 is the spacing width P of the outer ring, the size of the spacing groove width P is slightly larger than the size of the width Q of the disc retainer, so as to prevent the influence on rotation, and it is noted that the size of the spacing groove width P cannot be too large relative to the size of the width Q of the disc retainer, and the size difference cannot exceed the value range of the axial gap, so as to prevent the retainer from deflecting during the bearing operation.

Further, the disc-type cage comprises an annular body, wherein the annular body is an integrally formed sheet-type disc, the outer edge of the annular body of the disc-type cage is assembled in a cage limiting groove 230 of the outer ring, a plurality of cage beams 410 extending towards the center direction of the disc-type cage are formed along the circumferential inner diameter of the annular body, the plurality of cage beams 410 are uniformly arranged in the annular body, pockets 420 of the disc-type cage are formed between every two adjacent cage beams 410, the pockets 420 are in a semi-open mode, contact surfaces matched with the outer surfaces of the rollers 300, namely the inner wall surfaces of the pockets 420, are formed by the side walls of the two adjacent cage beams 410, and when the disc-type cage is assembled, the rollers 300 are assembled in the pockets 420 from one side of the disc-type cage, so that the whole inner wall surfaces 421 of the pockets are contacted with the outer diameter surfaces of the rollers.

Based on the above-mentioned technical solution, since the pocket 420 adopts a semi-open form, the end of the cage beam 410 extending toward the center of the cage is the free end 411 of the cage beam.

A locking notch 430 of pocket 420 is formed between the free ends 411 of each adjacent two retainer beams. Preventing the roller 300 from falling out of the pocket 420 and serving as a locking roller, and the distance of the locking notch 430 is determined by reasonable calculation. Specifically, the dimension L2 of the locking opening of the retainer is generally smaller than about 1mm of the diameter of the rolling body, and the locking amount is not fixed and is designed differently according to the condition of the matrix.

By the design of the locking notch 430 described above, the rollers 300 are fitted into the pockets 420, so that the bearing outer race 200, the rollers 300 and the disc cage 400 form one unit, preventing the rollers 300 from falling from the inner diameter direction during installation.

Further, the center diameter of the circle where the pocket 420 is located is matched with the roller diameter.

Further, the disc cage 400 pockets the roller 300 in the radial direction of the roller 300 and the disc cage 400 is located at a middle position of the entire axial length of the roller 300.

The width of the retainer beam depends on the diameter of the center of the circle where the pocket is located and the diameter of the rollers, under the condition of the same number of the rollers, the larger the diameter of the rollers is, the larger the diameter of the center of the circle where the pocket is located is, the smaller the width of the retainer beam is, and the number of the rollers can be increased by reducing the width of the retainer beam, so that the bearing capacity of the bearing is improved.

Further, the outer edge of the disc-type retainer 400 is uniformly provided with a plurality of oil holes along the circumferential direction, the plurality of oil holes comprise radial lubricating oil holes 440 and axial lubricating oil holes 450 which are the same in number and in one-to-one correspondence, the plurality of axial lubricating oil holes 450 are all arranged at the outer edge of the disc-type retainer corresponding to the position of the retainer beam 410 and penetrate through the end surfaces of the two sides of the disc-type retainer 400, and the plurality of radial lubricating oil holes 440 are all arranged perpendicular to the axial lubricating oil holes 450 from the outer diameter surface of the disc-type retainer 400 and are communicated with the axial lubricating oil holes 450.

Based on the above technical solution, the radial lubrication holes 440 are provided in the middle of the outer diameter surface of the disc cage 400, and a plurality of radial lubrication holes 440 are uniformly distributed on the outer diameter surface of the disc cage 400 along a ring shape, and a plurality of radial lubrication holes 440 correspond to the split surfaces between two split half-outer rings.

The assembling method of the disc cage cylindrical roller bearing comprises the steps of integrally forming the outer ring 200, integrally forming the outer ring, forming the outer V-shaped groove 250 on the outer diameter surface of the integral outer ring, forming the cage limit groove 230 and the inner V-shaped groove 260 on the inner diameter surface of the integral outer ring, dividing the integral outer ring along the outer V-shaped groove 250 and the inner V-shaped groove 260 to form two annular split half-outer rings 210 and 220, firstly assembling the roller 300 into the disc cage 400, assembling the roller 300 into the pocket 420 from one side of the disc cage 400, enabling the inner wall surface of the whole pocket 420 to be in contact with the outer diameter surface of the roller 300, then installing the disc cage 400 with the roller 300 into the cage limit groove 230 between the two split half-outer rings, locking the two split half-outer rings 210 and 220 through a plurality of clamping rings, and finally assembling the inner ring into the bearing from one side of the disc cage.

It should be noted that the detailed portions of the present invention are not described in the prior art.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The foregoing list is only the preferred embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.

Claims

1. A disc-type cage cylindrical roller bearing, characterized in that it comprises an inner ring, an outer ring, rollers and a disc-type cage, wherein the inner ring and the outer ring are coaxially arranged, and the disc-type cage and a plurality of rollers are arranged between the inner ring and the outer ring; the outer ring is formed by combining two annular split half outer rings, a cage limiting groove for positioning the disc-type cage is arranged in the middle of the inner diameter surface of the outer ring, the cage limiting groove is formed between the two split half outer rings, the outer edge of the disc-type cage is assembled in the cage limiting groove, and outer ring ribs are arranged on both sides of the inner diameter surface of the outer ring, and the rollers are axially limited by the outer ring ribs.

2. The disc-type retainer cylindrical roller bearing according to claim 1 is characterized in that: an outer V-shaped groove is provided in the middle of the outer diameter surface of the outer ring, and the outer V-shaped groove is arranged in a circle along the ring; an inner V-shaped groove is provided on the outer diameter surface of the retainer limit groove, and the inner V-shaped groove is arranged in a circle along the ring; the outer V-shaped groove is symmetrically arranged along the axial center line of the outer ring, and the bottom of the outer V-shaped groove is located on the axial center line of the outer ring; the inner V-shaped groove is symmetrically arranged along the axial center line of the outer ring, and the bottom of the inner V-shaped groove is located on the axial center line of the outer ring.

3. The disc-type retainer cylindrical roller bearing according to claim 2 is characterized in that the two split half outer rings are formed by splitting the integral outer ring along the outer V-groove and the inner V-groove.

4. The disc-type retainer cylindrical roller bearing according to claim 3 is characterized in that: a V-shaped separation groove is arranged in the middle of the outer diameter surface of the outer ring, and the separation groove is arranged in a circle along the ring, and the outer V-shaped groove is arranged at the bottom of the separation groove, and the groove mouth of the outer V-shaped groove continues at the bottom of the separation groove; the groove edge inclination angles of the outer V-shaped groove and the inner V-shaped groove are consistent with the machining tool angle, and the groove edge inclination angle of the separation groove is 120°; the distance between the bottom of the outer V-shaped groove and the bottom of the inner V-shaped groove is 1~1.5mm.

5. The disc-type retainer cylindrical roller bearing according to claim 1 is characterized in that: each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, the plurality of semicircular clamping grooves are evenly arranged around the outer diameter surface of the split half outer ring, the clamping grooves on the two split half outer rings are symmetrically arranged along the outer ring split surface, and are paired and combined in pairs to form a complete annular clamping groove, an annular clamping ring is embedded in each annular clamping groove, and the two split half outer rings are locked by multiple clamping rings; the inner diameter of the clamping ring is interference fit with the clamping groove.

6. The disc-type retainer cylindrical roller bearing according to claim 1 is characterized in that: the radial angle between the outer ring rib and the outer ring is 15'-20', the roller end face is set as a spherical base surface, a roller pocket is set at the center of the end face, and the outer ring rib is in contact with the roller spherical base surface to limit the position.

7. A disc-type retainer cylindrical roller bearing according to any one of claims 1 to 6, characterized in that: the disc-type retainer includes an annular body, the annular body is an integrally formed sheet-type disc, the outer edge of the annular body of the disc-type retainer is assembled in the retainer limit groove of the outer ring; a plurality of retainer beams extending toward the center direction of the disc-type retainer are formed along the circumferential inner diameter of the annular body, and the plurality of retainer beams are evenly arranged in the annular body; a pocket of the disc-type retainer is formed between every two adjacent retainer beams, the pocket is semi-open, and the center diameter of the circle where the pocket is located matches the roller diameter.

8. The disc-type cage cylindrical roller bearing according to claim 7 is characterized in that: each of the pockets is formed by two adjacent cage beam side walls to form a contact surface that cooperates with the outer surface of the roller, i.e., the inner wall surface of the pocket; the disc cage holds the roller in the radial direction of the roller and the disc cage is located in the middle position of the entire axial length of the roller; the end of the cage beam extending toward the center of the disc cage is the free end of the cage beam; and a locking mouth of the pocket is formed between the free ends of each two adjacent cage beams.

9. The disc-type cage cylindrical roller bearing according to claim 7 is characterized in that: a plurality of oil holes are evenly arranged along the circumferential direction on the outer edge of the disc-type cage, and the plurality of oil holes include radial lubricating oil holes and axial lubricating oil holes of the same number and corresponding to each other; the plurality of axial lubricating oil holes are all arranged on the outer edge of the disc-type cage corresponding to the position of the cage beam and penetrate the end faces of both sides of the disc-type cage, and the plurality of radial lubricating oil holes are all arranged from the outer diameter surface of the disc-type cage perpendicular to the axial lubricating oil holes and connected with the axial lubricating oil holes.

10. An assembly method for a disc-type retainer cylindrical roller bearing as described in any one of claims 1 to 9, characterized in that: the outer ring is integrally machined, an outer V-groove is machined on the outer diameter surface of the integral outer ring, a retainer limit groove and an inner V-groove are machined on the inner diameter surface of the integral outer ring, and the integral outer ring is split along the outer V-groove and the inner V-groove to form two annular split half outer rings; when assembling the bearing, the roller is first installed in the disc-type retainer, and then the disc-type retainer with the roller is installed in the retainer limit groove between the two split half outer rings, and then the two split half outer rings are locked by multiple clamping rings; after the outer components are assembled, the inner ring is finally installed into the bearing from one side of the bearing.