Disc type retainer cylindrical roller bearing and assembling method thereof

Abstract

The invention relates to a disc-type retainer cylindrical roller bearing and an assembling method thereof, and belongs to the technical field of bearing assembling and manufacturing, the disc-type retainer cylindrical roller bearing comprises an inner ring, an outer ring, rollers and a disc-type retainer, 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, a retainer limiting groove used for positioning the disc type retainer is formed in the middle of the inner diameter face of the outer ring, 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. Flanges are arranged on the two sides of the inner diameter face of the outer ring, and the rollers are axially limited through the flanges. The limitation on the retainer is reduced through the split bearing outer ring, and the split outer ring is combined with the disc type retainer, so that the assembly space of the retainer is effectively controlled, the 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.

Description

Technical Field

[0001] The invention relates to a disc-type retainer cylindrical roller bearing and an assembly method thereof, belonging to the technical field of bearing assembly and manufacturing. Background Art

[0002] With the continuous development of equipment technology, the performance requirements for industrial gearboxes are getting higher and higher, especially in the petrochemical industry. The performance of existing cylindrical roller bearings is increasingly unable to meet the increasing production capacity needs, and abnormal shutdowns will cause great economic losses, so bearings are required to have high load-bearing, long life and high reliability. Conventional cylindrical roller bearing cages occupy a large space, which reduces the bearing's load-bearing capacity; although full-fill cylindrical roller bearings have greatly improved their load-bearing capacity, they are not suitable for high-speed working conditions and are prone to jamming. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to comprehensively consider the bearing load, speed and other working conditions, and provide a disc cage cylindrical roller bearing that can meet the high performance and high reliability requirements of large industrial gear boxes.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a disc-type cage cylindrical roller bearing, comprising an inner ring, an outer ring, a roller and a disc-type cage, 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 a combination of 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.

[0005] Furthermore, 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 retaining frame limiting 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.

[0006] Furthermore, the two split half outer rings are formed by splitting the integral outer ring along the outer V-shaped groove and the inner V-shaped groove.

[0007] Furthermore, a V-shaped separation groove is provided in the middle of the outer diameter surface of the outer ring, and the separation groove is arranged in a circle along the ring. The outer V-shaped groove is provided 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.

[0008] Furthermore, each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, and 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, and an annular clamping ring is embedded in each annular clamping groove, and the two split half outer rings are locked by multiple clamping rings.

[0009] Furthermore, the inner diameter of the clamping ring is interference fit with the clamping groove.

[0010] Furthermore, 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 cavity is set at the center of the end face, and the outer ring rib is in contact with the roller spherical base surface for limiting position.

[0011] Furthermore, the two end faces of the outer edge of the disc retainer correspond to the side walls of the retainer limiting groove, and an axial gap between the disc retainer and the outer ring is formed between the two end faces of the outer edge of the disc retainer and the side walls of the retainer limiting groove; the outer diameter surface of the disc retainer corresponds to the bottom of the retainer limiting groove, and a radial gap between the disc retainer and the outer ring is formed between the outer diameter surface of the disc retainer and the bottom of the retainer limiting groove.

[0012] Furthermore, the radial gap is larger than the axial gap.

[0013] Furthermore, the disc-type retainer includes an annular body, which is an integrally formed sheet-type disc, and the outer edge of the annular body of the disc-type retainer is assembled in the retainer limiting groove of the outer ring; a number 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 number of retainer beams are evenly arranged in the annular body.

[0014] Furthermore, pockets of the disc-type cage are formed between every two adjacent cage beams, the pockets are semi-open, and the center diameter of the circle where the pockets are located matches the roller diameter.

[0015] Furthermore, each pocket hole is formed by two adjacent side walls of the retaining frame beam to form a contact surface that matches the outer surface of the roller, that is, the inner wall surface of the pocket hole.

[0016] Furthermore, the disc-type retainer holds the roller in the radial direction of the roller and is located in the middle of the entire axial length of the roller.

[0017] Furthermore, the end of the cage beam extending toward the center of the disc cage is the free end of the cage beam; a locking opening of the pocket is formed between the free ends of every two adjacent cage beams.

[0018] Furthermore, the outer edge of the disc retainer is evenly provided with a plurality of oil holes along the circumferential direction, 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 retainer corresponding to the position of the retainer beam and penetrate the end faces of both sides of the disc retainer, and the plurality of radial lubricating oil holes are all arranged perpendicular to the axial lubricating oil holes from the outer diameter surface of the disc retainer and are connected with the axial lubricating oil holes.

[0019] The assembly method of the above-mentioned disc-type cage cylindrical roller bearing is as follows: the outer ring is integrally processed and formed, an outer V-shaped groove is processed on the outer diameter surface of the integral outer ring, and a cage limit groove and an inner V-shaped groove are processed on the inner diameter surface of the integral outer ring. The integral outer ring is split along the outer V-shaped groove and the inner V-shaped groove to form two annular split half outer rings. When assembling the bearing, the roller is first installed in the disc-type cage, and then the disc-type cage with the roller is installed in the cage 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 component is assembled, the inner ring is finally installed into the bearing from one side of the bearing.

[0020] The beneficial effects of the present invention are as follows: the present invention reduces restrictions on the cage structure through the split bearing outer ring structure, and the split outer ring is combined with the disc cage to effectively control the assembly space of the cage, so that the disc cage cylindrical roller bearing has the advantages of high load capacity, long life and high reliability, thereby improving the performance of the gear box and avoiding losses caused by downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a disc-type cage cylindrical roller bearing of the present invention; Figure 2 It is a schematic diagram of the structure of the outer ring of the bearing; Figure 3 This is an enlarged view of the outer ring V-groove structure; Figure 4 This is an enlarged view of the outer ring rib structure; Figure 5 is a schematic diagram of the bearing roller structure; Figure 6 This is a schematic diagram of the clamping ring assembly; Figure 7 This is the exploded view of the clamping ring and the clamping groove; Figure 8It is a schematic diagram of the bearing disc cage structure; Fig. 9 for Figure 8 Front view of the cross section; Fig.10 Schematic diagram of the structure for installing rollers in disc cages; Fig.11 for Fig. 9 AA section view; Fig.12 for Fig.11 The C position is enlarged and assembled with the bearing outer ring; Fig.13 for Fig. 9 The structure diagram of the B position enlarged and assembled with the roller; In the figure: 100, inner circle, 200, outer ring, 210, first split half outer ring, 220, second split half outer ring, 230, retainer limit groove, 240, outer ring rib, 250, outer V-shaped groove, 260, inner V-shaped groove, 270, separation groove, 280, clamping groove; 300, roller, 310, ball base surface, 320, roller cavity; 400, disc cage, 410, cage beam, 411, free end of cage beam, 420, pocket hole, 421, inner wall surface of pocket hole, 430, lock mouth, 440, radial lubricating oil hole, 450, axial lubricating oil hole; 500, clamping ring; 600, axial clearance; 700. Radial clearance. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] See attached Figure 1-12A disc-type retainer cylindrical roller bearing comprises an inner ring 100, an outer ring 200, a roller 300 and a disc-type retainer 400. The inner ring 100 and the outer ring 200 are coaxially arranged, and a plurality of rollers 300 and a 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, and 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, and 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, and outer ring ribs 240 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 240. The two split half outer rings are correspondingly provided with clamping grooves 280 on the outer diameter surfaces, and clamping rings 500 are embedded in the clamping grooves 280 . The two split half outer rings 210 , 220 are locked by a plurality of clamping rings 500 .

[0024] Furthermore, each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, and the plurality of semicircular clamping grooves are evenly arranged around the outer diameter surface of the split half outer ring, and the clamping grooves on the two split half outer rings are symmetrically arranged along the outer ring split surface, and are paired and combined to form a complete annular clamping groove, and 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.

[0025] Specifically, in this embodiment, the number of clamping rings is 13 and they are evenly distributed along the circumference of the outer ring.

[0026] Furthermore, an outer V-shaped groove 250 is provided in the middle of the outer diameter surface of the outer ring, and the outer V-shaped groove 250 is arranged in a circle along the ring; an inner V-shaped groove 260 is provided on the outer diameter surface of the retainer limit groove 230, and the inner V-shaped groove 260 is arranged in a circle along the ring; the outer V-shaped groove 250 is symmetrically arranged along the axial center line of the outer ring, and 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 260 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. The two split half outer rings are formed by splitting the integral outer ring along the outer V-shaped groove and the inner V-shaped groove.

[0027] Based on the above technical solution, an inner V-groove 260 and an outer V-groove 250 are designed on the inner and outer surfaces of the outer ring, so that the outer ring of the bearing is split along the opening direction of the inner and outer V-groove 260, and the splitting process is safer and more reliable, reducing the waste of parts. After the outer ring of the present invention is split and assembled, the split surfaces of the two split half outer rings can correspond to each other, which has a better assembly effect than the split half outer rings that are processed separately and then paired.

[0028] like Figure 2As shown, the outer ring of the bearing is designed as an integral structure. After the ring is processed as a whole, the outer ring is cut into two halves through the inner V-groove 260 and the outer V-groove 250. When the bearing is assembled, the roller 300 is first installed in the disc retainer 400, and then the disc retainer 400 is installed in the retainer limit groove 230 between the two split half outer rings, and finally the two split half outer rings are locked by multiple clamping rings 500.

[0029] Furthermore, a V-shaped separation groove 270 is provided in the middle of the outer diameter surface of the outer ring, and the separation groove 270 is arranged in a circle along the ring. The outer V-shaped groove 250 is arranged at the bottom of the separation groove, and the groove mouth of the outer V-shaped groove 250 continues at the bottom of the separation groove 270; the groove edge inclination angles of the outer V-shaped groove 250 and the inner V-shaped groove 260 are consistent with the machining tool angle, and the groove edge inclination angle of the separation groove 270 is 120°; the distance S between the groove bottom of the outer V-shaped groove 250 and the groove bottom of the inner V-shaped groove 260 is 1~1.5mm.

[0030] Based on the above technical solution, the inner diameter of the bearing outer ring and the outer diameter of the retaining groove of the cage are designed with V-shaped grooves, such as Figure 3 As shown, the angle of the V-groove is α, which is generally consistent with the angle of the machining tool. The angle of the upper separation groove is β, which is 120°. The distance S between the bottoms of the inner and outer V-grooves is controlled between 1 and 1.5 mm. This design can more conveniently split the outer ring of the bearing into two halves, and the cross-section is relatively more regular. The separation groove 270 provides operating space for the machining of the outer V-groove 250, while reducing the grooving depth of the outer V-groove, making it easier to control the distance between the bottom of the outer V-groove 250 and the bottom of the inner V-groove 260 to be between 1 and 1.5 mm.

[0031] Furthermore, the radial angle between the outer ring rib 240 and the outer ring is 15'-20', the end face of the roller 300 is set as a spherical base surface 310, a roller pocket 320 is designed at the center of the cylindrical roller end face, and the outer ring rib 240 is in contact with the roller spherical base surface 310 for limiting.

[0032] Based on the above technical solution, Figure 4 As shown, the bearing rib 240 forms an angle γ with the radial direction, which can be 15' or 20', etc. Figure 5 As shown, the cylindrical roller end face is designed with a spherical base surface, and the center of the cylindrical roller end face is designed with a roller pocket. The spherical base surface 310 radius R is designed differently according to the bearing size and contact position. This reduces the contact area between the bearing rib and the cylindrical roller, which can reduce wear and increase the maximum speed of the bearing.

[0033] Furthermore, the two end faces of the outer edge of the disc retainer 400 correspond to the side walls of the retainer limiting groove 230, and an axial gap 600 between the disc retainer 400 and the outer ring 200 is formed between the two end faces of the outer edge of the disc retainer 400 and the side walls of the retainer limiting groove 230; the outer diameter surface of the disc retainer 400 corresponds to the groove bottom of the retainer limiting groove 230, and a radial gap 700 between the disc retainer 400 and the outer ring 200 is formed between the outer diameter surface of the disc 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 the retainer from being worn during operation.

[0034] Specifically, the radial clearance is 0.7~1.0mm, and the axial clearance is 0.2~0.4mm. The clearance may vary slightly depending on the bearing size.

[0035] Based on the above technical solution, the distance between the two side walls of the retaining frame limit groove 230 is the limit width P of the outer ring, and the limit groove width P is slightly larger than the width Q of the disc retaining frame to prevent affecting the rotation; it should be noted that the limit groove width P cannot be too large relative to the width Q of the disc retaining frame, and the size difference cannot exceed the value range of the axial clearance to prevent the retaining frame from being skewed during the operation of the bearing.

[0036] Furthermore, the disc-type retainer includes an annular body, which is an integrally formed sheet-type disc, and the outer edge of the annular body of the disc-type retainer is assembled in the retainer limiting groove 230 of the outer ring; a plurality of retainer beams 410 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 410 are evenly arranged in the annular body; a pocket 420 of the disc-type retainer is formed between each two adjacent retainer beams 410, and the pocket 420 is a semi-open form, and each of the pockets 420 is formed by the side walls of two adjacent retainer beams 410 to form a contact surface that matches the outer surface of the roller 300, that is, the inner wall surface of the pocket 420; during assembly, the roller 300 is installed in the pocket 420 from one side of the disc-type retainer, so that the entire pocket inner wall surface 421 contacts the outer diameter surface of the roller.

[0037] Based on the above technical solution, since the pocket 420 is in 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.

[0038] A locking opening 430 of the pocket 420 is formed between the free ends 411 of each two adjacent cage beams. This prevents the roller 300 from falling out of the pocket 420 and plays a role in locking the roller; the distance of the locking opening 430 is determined by reasonable calculation. Specifically, the cage locking opening size L2 is generally smaller than the rolling element diameter by about 1 mm, and the locking amount is not fixed and is designed differently according to the substrate conditions.

[0039] By means of the lock 430 design, the roller 300 is installed in the pocket 420, so that the bearing outer ring 200, the roller 300 and the disc retainer 400 form an assembly, preventing the roller 300 from falling from the inner diameter direction during the installation process.

[0040] Furthermore, the center diameter of the circle where the pocket 420 is located matches the roller diameter.

[0041] Furthermore, the disc-type retainer 400 holds the roller 300 in the radial direction of the roller 300 and the disc-type retainer 400 is located in the middle of the entire axial length of the roller 300 .

[0042] The width of the cage beam depends on the center diameter of the circle where the pocket is located and the diameter of the roller; under the condition of the same number of rollers, the larger the roller diameter and the larger the center diameter of the circle where the pocket is located, the smaller the cage beam width; this solution can increase the number of rollers and improve the bearing capacity of the bearing by reducing the cage beam width.

[0043] Furthermore, a plurality of oil holes are evenly arranged along the circumferential direction on the outer edge of the disc retainer 400, and the plurality of oil holes include radial lubricating oil holes 440 and axial lubricating oil holes 450 of the same number and corresponding to each other; the plurality of axial lubricating oil holes 450 are all arranged on the outer edge of the disc retainer corresponding to the position of the retainer beam 410 and penetrate the end faces of both sides of the disc 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 retainer 400 and are connected with the axial lubricating oil holes 450.

[0044] Based on the above technical solution, the radial lubricating oil hole 440 is set in the middle of the outer diameter surface of the disc retainer 400, and several radial lubricating oil holes 440 are evenly distributed on the outer diameter surface of the disc retainer 400 along a ring shape, and several radial lubricating oil holes 440 correspond to the section surface between two split half outer rings.

[0045] The assembly method of the disc-type retainer cylindrical roller bearing is as follows: the outer ring 200 is integrally machined and formed, the outer V-shaped groove 250 is machined on the outer diameter surface of the integral outer ring, the retainer limit groove 230 and the inner V-shaped groove 260 are machined on the inner diameter surface of the integral outer ring, the integral outer ring is split 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, when the bearing is assembled, the roller 300 is first installed into the disc The disc-type retainer 400 is installed in the roller 300, and the roller 300 is installed into the pocket hole 420 from one side of the disc-type retainer 400, so that the entire inner wall surface of the pocket hole 420 contacts the outer diameter surface of the roller 300; then the disc-type retainer 400 with the roller 300 is installed in the retainer limit groove 230 between the two split half outer rings, and then the two split half outer rings 210 and 220 are locked by multiple clamping rings. After the outer components are assembled, finally the inner ring is installed into the bearing from one side of the bearing.

[0046] It should be noted that the parts not described in detail in the present invention are prior art.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0052] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. Disc-type cage cylindrical roller bearing, characterized by: It includes an inner ring, an outer ring, rollers and a disc cage, the inner ring and the outer ring are coaxially arranged, the disc 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 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 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 cage cylindrical roller bearing according to claim 1, 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 retaining frame limiting 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 cage cylindrical roller bearing according to claim 2, characterized in that: The two split half outer rings are formed by splitting the whole outer ring along the outer V-shaped groove and the inner V-shaped groove.

4. The disc-type cage cylindrical roller bearing according to claim 3, 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. 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 processing 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 cage cylindrical roller bearing according to claim 1, characterized in that: Each split half outer ring is provided with a plurality of semicircular clamping grooves on the outer diameter surface, and 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 cage cylindrical roller bearing according to claim 1, 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, the center of the end face is set as a roller cavity, and the outer ring rib is in contact with the roller spherical base surface for limiting position.

7. The disc cage cylindrical roller bearing according to any one of claims 1 to 6, characterized in that: The disc-type retainer includes an annular body, which is an integrally formed sheet-type disc, and the outer edge of the annular body of the disc-type retainer is assembled in the retainer limiting 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, and the pocket is in a semi-open form, 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, characterized in that: Each of the pockets is formed by two adjacent retainer beam side walls to form a contact surface that matches the outer surface of the roller, i.e., the inner wall surface of the pocket; the disc retainer holds the roller in the radial direction of the roller and the disc retainer is located in the middle of the entire axial length of the roller; the end of the retainer beam extending toward the center of the disc retainer is the free end of the retainer beam; a locking opening of the pocket is formed between the free ends of each two adjacent retainer beams.

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

10. The assembly method of a disc-type cage cylindrical roller bearing according to 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 retainer, and then the disc 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 component is assembled, the inner ring is finally installed into the bearing from one side of the bearing.

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